Name(s): Period: Date:

Size: px
Start display at page:

Download "Name(s): Period: Date:"

Transcription

1 Bioaccumulation: An Example of the Human Impact on Biodiversity HASPI Medical Biology Lab 15 Background/Introduction The Benefits of Biodiversity The variety of life on Earth is called biodiversity. Biodiversity is increased by the formation of new species (speciation) and decreased by the loss of species (extinction). An ecosystem or community with a large variety of species and relatively equal populations is considered to have high biodiversity, while either a low variety of species or unequal population sizes can cause an ecosystem or community to have low biodiversity. High biodiversity in an ecosystem means: Increased productivity A greater variety of food sources Increased sustainability for the species within the ecosystem Better ability to withstand and recover from disasters 273_580_360.jpg Why is biodiversity important? Each species in an ecosystem has an important role. Disruption or removal of a single species can cause a domino effect that impacts the entire ecosystem. For example, in 1969 the zoologist Robert T. Paine conducted a research study that involved removing a species of sea star, P. ochraceus, from a portion of Mukkaw Bay in Washington. The sea star primarily fed on mussels. The area contained 15 species at the start of the experiment, but over time only 8 species remained and the mussel population sky-rocketed, making up over 80% of the population of all organisms in the area. In addition, a higher biodiversity can benefit humans. The following is only a short list of ways in which biodiversity can benefit us: Formation and protection of soil resources Contributes to a relative stability in climate Breakdown and absorption of pollution Recycling and storage of nutrients Ecosystem maintenance Recovery from natural disasters Food resources Source of pharmaceuticals Building products Genetic diversity Tourism and recreation Cultural and aesthetic value Anthropogenic Changes Humans depend on the living world for the resources and other benefits provided by biodiversity, but human activity is also having adverse impacts on biodiversity through overpopulation, overexploitation, habitat destruction, pollution, introduction of invasive The Human Impact and Biodiversity, HASPI Medical Biology Lab

2 species, and contribution to climate change. Thus sustaining biodiversity so that ecosystem functioning and productivity are maintained is essential to supporting and enhancing human life on Earth. Sustaining biodiversity also aids humanity by preserving landscapes of recreational or inspirational value. Moreover, anthropogenic changes (induced by human activity) in the environment including habitat destruction, pollution, introduction of invasive species, overexploitation, and climate change can disrupt an ecosystem and threaten the survival of some species, initiating the domino effect of impact. Biomagnification & Bioaccumulation: An Example of Anthropogenic Change Pollutants that exist in small amounts in the environment (such as certain heavy metals and organic agents found in pesticides) become concentrated in organisms near the top of the food chain. In an estuary, for example, microorganisms called plankton absorb small amounts of pollutants such as PCBs (polychlorinated biphenyls); the fish that eat lots of plankton retain the pollutants in their tissues; then birds or people that eat the fish concentrate the pollutants in their own cells and tissues. This process is called biomagnification, and can eventually result in health issues when pollutant levels in the body become toxic. The actual building up of these pollutants in the body is called bioaccumulation. Not all bioaccumulation is harmful. It is a normal and essential process for the growth of organisms. All animals bioaccumulate vital nutrients daily, such as vitamins, trace minerals, essential fats, and amino acids. What concerns toxicologists is the bioaccumulation of certain substances to levels in the body that cause harm. Some of the harmful substances that are capable of bioaccumulating include PCBs, fluoride, dioxins, boron, DDT (pesticides), and mercury. Where bioaccumulation occurs in the body depends on the substance. It could build up in a specific organ, such as the liver or kidneys. It could also build up in specific tissues, like fat, and every time fat is broken down in the body the toxin is released and makes the individual sick. The biggest health concern for these substances is that the body is not able to efficiently break down and/or remove them from the body. This causes them to build up over time and eventually reach toxic levels that can result in poisoning. 412 Substance PCBs (polychlorinated biphenyls) Dioxins Mercury Cause Used as coolants and lubricants in transformers, capacitors, electrical equipment By-product of chlorine bleaching, burning plastics, pesticide production Coal burning power plants (most common cause) Source for Human Contamination Found in fish, surface soil, and drinking water Found in contaminated beef, pork, chicken, fish, milk, and eggs Found in seafood, especially tuna, shark, and swordfish bioaccumulation-vs-biomagnification.png The Human Impact and Biodiversity, HASPI Medical Biology Lab 15 Symptoms Stored in fatty tissues; liver damage, brain disorders, skin problems, cancer, hormone imbalance, birth defects Skin lesions, hormone imbalance, sterility, nervous system dysfunction, cancer Neurological effects: tremors, blindness, numbness, pain, memory loss, seizures, death

3 Mercury Poisoning: An Example of Bioaccumulation Ocean organisms ingest a form of mercury called methyl mercury. This pollutant is produced in several industrial processes and is found in run-off into streams and rivers. These rivers eventually lead to the ocean where the mercury builds up and is ingested by small organisms. Methyl mercury can cause sickness if inhaled, eaten, or placed on the skin for long periods of time. Usually mercury causes problems over years or decades, not immediately. In other words, being exposed to small amounts of mercury every day for years will likely cause symptoms that appear later. Long-term exposure will likely cause neurological symptoms, including: Numbness or pain in certain parts of the skin Uncontrollable shaking or tremors Inability to walk well Blindness and double vision Memory problems Seizures and death (large exposures) Medical evidence suggests that being exposed to large amounts of methyl mercury while pregnant can permanently damage the baby s developing brain. Most doctors will recommend eating less fish and avoiding shark and swordfish while pregnant. These recommendations are made to be extremely cautious. Small and occasional exposures are unlikely to cause any problems. However, for anyone with a certain level of mercury found in the body, treatment of organic mercury exposure usually consists of medicines called chelators to remove it from the blood and draw it away from the brain and kidneys. Often, these medications will have to be used for weeks to months. Review Questions answer questions on a separate sheet of paper 1. What is biodiversity? 2. What is the difference between an ecosystem/community with high biodiversity and low biodiversity? 3. What does high biodiversity mean for an ecosystem? 4. List 3 ways that biodiversity can benefit humans. 5. Explain one way that biodiversity directly benefits you. 6. What is anthropogenic change? Give 3 examples. 7. What is the difference between biomagnification and bioaccumulation? 8. Explain why biomagnification has a larger impact on organisms at the top of the food chain. 9. What is one substance that can bioaccumulate? What is its cause, source, and symptoms? 10.Explain how you personally could be exposed to mercury. How might you limit your mercury intake? The Human Impact and Biodiversity, HASPI Medical Biology Lab

4 HASPI Medical Biology Lab 15 Scenario In this activity bioaccumulation will be modeled to demonstrate how a hazardous substance, such as mercury, can bioaccumulate in a food chain and eventually result in health issues for organisms at higher levels of the food chain. You will also have the opportunity to research methods to mitigate bioaccumulation of heavy metals within the environment, as well as organisms within the environment and the human body. Materials 18 PROTIST vials 6 SMALL FISH vials Dialysis tubing 12 KRILL vials 1 HUMAN vial Tetra-ethyl lead solution 3 TUNA vials Beads rep. mercury Cytoplasm solution Beaker Water Plastic pipette Timer Paper towels Directions Part A. Modeling Bioaccumulation Task Response This simulation will be done as a class! Wait to complete each step as your teacher instructs. There are five different types of vials, each representing an organism in the food chain. PROTISTS - producers located at the bottom of the food chain. An example is plankton. 1 KRILL - shrimp-like organisms that feed on plankton. SMALL FISH - feed on krill. TUNA - feed on the small fish. HUMANS - feed mostly on larger fish. 2 Obtain a vial from your teacher. You may not receive the same one as your neighbor. Your organism is labeled on your container. The beads in the containers represent the mercury that the organism has consumed. All PROTIST vials contain beads. To start this activity, only the 3 plankton that fed from the bottom levels have been contaminated with mercury. Mercury cannot be broken down so it remains in the organism and is passed to the next one that consumes it. 4 STAND UP if you were given a PROTIST or KRILL container. Observe the PROTIST vials. How much mercury (number Answer: 5 of beads) is present in each PROTIST vial? When directed by your teacher, students with KRILL vials will consume the PROTIST vials. (No rough play here; take caution 6 not to spill the beads.) Pour the contents of the PROTIST vial into the vial of the KRILL that is consuming you. As soon as you have been consumed, return to your seat with your empty vial. KRILL should continue to consume until all PROTISTS are consumed. 414 The Human Impact and Biodiversity, HASPI Medical Biology Lab 15

5 7 STAND UP if you were given a KRILL or SMALL FISH container. Observe the KRILL vials. How much mercury is present Answer: 8 in each KRILL vial? When directed by your teacher, students with SMALL FISH vials will consume the KRILL 9 vials. When consumed, pour the contents of the KRILL vial into the vial of the SMALL FISH that eats you. As soon as you are consumed, return to your seat with your empty vial. 10 STAND UP if you were given a SMALL FISH or TUNA container. Observe the SMALL FISH vials. How much mercury is Answer: 11 present in each SMALL FISH vial? When directed by your teacher, students with TUNA vials will consume the SMALL FISH 12 vials. When consumed, pour the contents of the SMALL FISH vial into the vial of the TUNA that eats you. As soon as you are consumed, return to your seat with your empty vial. 13 STAND UP if you were given a TUNA or HUMAN container. Observe the TUNA vials. How much mercury is present Answer: 14 in each TUNA vial? When directed by your teacher, the student with the HUMAN vial will consume the TUNA vials. When consumed, pour the contents of the TUNA vial into the vial of the HUMAN that eats you. As soon as you are consumed, return to your seat with your empty vial. Observe the HUMAN vial. Approximately how much Answer: mercury is present in the HUMAN vial? What is the difference between biomagnification and bioaccumulation? Compare the build-up of mercury in the protists up the chain to the human. Which organism do you think is affected more by mercury bioaccumulation? Explain your answer. Summarize how this simulation modeled bioaccumulation in a food chain. Answer: Answer: Answer: Draw the food chain represented by this simulation below. 20 The Human Impact and Biodiversity, HASPI Medical Biology Lab

6 Part B. Modeling Bioaccumulation in the Body: Tetra-Ethyl Lead Task Response Specific organs and cells within the body tend to collect heavy metals and pollutants more than others. The liver and fat cells are particularly prone to bioaccumulation. In this portion of the activity, your lab team will create a model fat cell and observe the bioaccumulation of tetra-ethyl lead (the lead found in gasoline) in a fat cell. Substances that are fat-soluble easily a. What does it mean if a substance is fat-soluble? diffuse into fat cells within the body, where they remain until the fat cell is broken down to be used as energy. b. What is tetra-ethyl lead, and how can it get into our Tetra-ethyl lead is a heavy metal found bodies? in gasoline (primarily aviation) that is fat- 1 soluble, and therefore bioaccumulates in fat cells. An individual can breathe in tetra-ethyl lead in airplane or car c. Explain how the breaking down of fat cells for energy exhaust. When the body breaks down can result in lead poisoning within the body. the fat cells containing tetra-ethyl lead, it also releases the tetra-ethyl lead, resulting in lead poisoning. 2 Fill a beaker with ml of water. Open the dialysis tubing by rubbing the two edges together. This is much easier if the tubing is wet! Tie a tight knot in one end of the 3 dialysis tubing. You can do this by just tying a knot in the actual tubing, or by using string Using a plastic pipette, put approximately 10 ml of the Cytoplasm Solution into the dialysis tubing. The pipettes have a 1 ml mark on the side for measurement. Tie off the other end of the dialysis tubing by tying a knot in the actual tubing, or using string. The finished, enclosed dialysis tubing represents a fat cell. The fat cell is semi-permeable, and will allow water and fat-soluble substances, such as tetra-ethyl lead, to pass through the membrane. Add 10 drops of the Tetra-ethyl Lead Solution to the water in your beaker. Time Submerge the model fat cell (filled dialysis tube) into the beaker water. Observe the fat cell over a 10-minute period. Record your observations of the fat cell every 2 minutes in Table 1. a. What does the finished dialysis tubing represent? Table 1. Contaminated Fat Cell Observation Observation 0 minute 2 minutes 4 minutes 6 minutes 8 minutes 10 minutes 416 The Human Impact and Biodiversity, HASPI Medical Biology Lab 15

7 Remove the fat cell from the beaker and dry it on a paper towel. You will notice the tetraethyl lead in the contaminated water has 10 diffused into the fat cell by the brown to black color change of the cytoplasm. Empty the contents of the beaker down a 11 sink. Rinse out and dry the beaker. 12 Fill a beaker with ml of fresh water. Since fat cells have a semi-permeable membrane, substances like water can diffuse through the membrane. Hypothesize what 13 will happen when the fat cell is placed into fresh water, and is no longer surrounded by tetra-ethyl lead contamination. Submerge the model fat cell (filled 14 dialysis tubing) into the fresh beaker 15 water. Observe the fat cell over a 10-minute period. Record your observations of the fat cell every 2 minutes in Table 2. a. What happened to the fat cell placed in an environment with tetra-ethyl lead? Hypothesize why this happened. b. Hypothesis: What will happen when the fat cell is removed from an environment with tetra-ethyl lead? Table 2. Fat Cell Observation Time Observation 0 minute 2 minutes 4 minutes 6 minutes 8 minutes 10 minutes When the body needs energy from fat, it will break open fat cells. Using scissors, cut a hole in the dialysis tubing to represent the contents of the fat cell being released for energy. Leave the bag in the beaker of water. Observe what happens over 5 minutes, and record your observations at right. Remove the dialysis tubing and discard it in the trash. Empty the remaining contents of the beaker down the sink. Summarize what happened to the fat cell and tetra-ethyl lead throughout this simulation. Answer: a. What happened to the fat cell contaminated with tetra-ethyl lead when it was placed in a clean environment? Hypothesize why this happened. b. What happened over a 5-minute period when the fat cell (dialysis tubing) was split open? Explain why bioaccumulation of substances, such as tetra-ethyl lead, in fat cells can result in poisoning. How did this simulation demonstrate bioaccumulation? Answer: Answer: The Human Impact and Biodiversity, HASPI Medical Biology Lab

8 Part C. Mitigating Bioaccumulation Task Response Biomagnification and bioaccumulation of different substances can have a substantial impact on our environment and our health. Now that we have a better understanding of how this occurs, we need to look at how to mitigate, or reduce the severity and impact, of bioaccumulation. This part of the activity will give you the opportunity to research, design, evaluate, and refine a solution for reducing the impact of bioaccumulation on the environment, on biodiversity, and health. Choose one of the following real-life bioaccumulation scenarios. Proceed through the engineering process steps below, using the Internet for research, and design a concept that could be used to mitigate bioaccumulation. Scenarios: Polynuclear aromatic hydrocarbons (PAHs) Methyl-mercury Zinc 1 Cyanide Strontium-90 Ciguatoxin Selenium Tetra-ethyl lead Copper Vitamin A and carnivores Cadmium Polychlorinated biphenyls (PCBs) Chromium Dichlorodiphenyltrichloroethane (DDT) Nickel Process: Define the Problem & Conduct Background Research Use the Internet to research the substance you chose, and answer the following questions. 2 You will need to specifically research the substance in reference to bioaccumulation and/or biomagnification. Cite your reference source(s) for each answer. What is the substance, and 3 what is its source? Reference: 4 How does it get into the environment? Reference: 5 Where can it bioaccumulate in the environment? 6 Where can it bioaccumulate in an organism? Reference: Reference: 418 The Human Impact and Biodiversity, HASPI Medical Biology Lab 15

9 7 8 9 How does its bioaccumulation impact the health of the environment? How does its bioaccumulation impact the health of the organism? How can its bioaccumulation impact human health? Reference: Reference: Reference: Process: Brainstorm, Evaluate & Choose Solution DO NOT Idea 1: RESEARCH THIS! Brainstorm three ideas, or designs, that could be Idea 2: 10 used to mitigate, or reduce the bioaccumulation of this substance Idea 3: in the environment. 11 Evaluate and rank each idea based on cost, safety, and reliability. Also, consider the social, cultural, and environmental impacts. Approximate Cost Safety Reliability Idea 1 Idea 2 Idea 3 Social, Cultural, or Environmental Impact? The Human Impact and Biodiversity, HASPI Medical Biology Lab

10 12 Choose one of the ideas to expand upon, and develop further. a. Which idea did you choose and why? Process: Develop & Test a Solution What materials Materials: will you need to design your idea? What process or procedure will be needed to develop your solution? Procedure: Draw or describe a prototype version of your solution How will you test the effectiveness of your solution? 420 The Human Impact and Biodiversity, HASPI Medical Biology Lab 15

11 Connections & Applications Your instructor may assign or allow you to choose any of the following activities. As per NGSS/CCSS, these extensions allow students to explore outside activities recommended by the standards. 1. DIOXIN CONTAMINATION IN OUR FOOD SUPPLY: Dioxins are a common contaminant found throughout our food supply. Using the Internet and the graph below, answer the following questions: a. What are dioxins, and how do they get into our food supply? b. How can we prevent dioxins from getting into our food supply? c. According to the graph below, what food source had the highest level of dioxin contamination in 1995? Why do you think this was the case? d. According to the graph below, what food source had the lowest level of dioxin contamination in 1995? e. According to the graph below, rank the following foods from lowest to highest dioxin contamination: Chicken, eggs, beef, pork, fish, and milk. f. The abbreviation ppm stands for parts per million and ppb stands for parts per billion. The abbreviated units for this graph are ppt. What does that stand for? Levels of Dioxin in U.S. Food Supply (1995) Chart from May 2001 study by Arnold Schecter et. al., Journal of Toxicology and Environmental Health, Part A, 63:1 18. The Human Impact and Biodiversity, HASPI Medical Biology Lab

12 2. ANALYZING THE DATA: MERCURY LEVELS: Table A contains the average level of mercury in parts per million (ppm) found in two contaminated environments at each trophic level. Use the table to create a bar or line graph summarizing the information. Table A. Mercury Levels (ppm) Trophic Level Tested Environment A: Pacific Ocean near California coastline Environment B: Atlantic Ocean near New York coastline Producers 1 ppm 2 ppm Herbivores 3 ppm 34 ppm Primary Consumers 9 ppm 56 ppm Secondary Consumers 22 ppm 112 ppm Tertiary Consumers 48 ppm 390 ppm a. According to the graph you created, fish from which environment would be more risky to consume? Explain your answer. b. The World Health Organization has put the level of risk for mercury poisoning at 50 ppm. Is anyone that is consuming fish caught from the California or New York coastline at risk of mercury poisoning? NOTE: The FDA does not allow fish with greater than 1 ppm to be sold to consumers, so don t panic! c. According to Figure A below, which U.S. states have the highest level of mercury in their water systems? Why do you think this could be? Explain your answer. Figure A 3. RESEARCH: ANTHROPOGENIC CHANGE: Anthropogenic changes (induced by human activity) in the environment can disrupt an ecosystem and threaten the survival of some species. Choose one of the following human activities: Habitat destruction, air pollution, water pollution, introduction of invasive species, overexploitation, or contribution to climate change. Conduct Internet research and answer the following: a. How can this human activity impact the environment? Provide a description and summary of at least 3 real-world examples. (Cite your sources!) b. How can this human activity impact our health? Provide a description and summary of at least 3 real-world examples. (Cite your sources!) c. In what parts of the world does this human impact cause the most issues? Why? Explain your answer. (Cite your sources!) d. How can this human impact be mitigated? Provide at least one example of how mitigation has already occurred. (Cite your sources!) 422 The Human Impact and Biodiversity, HASPI Medical Biology Lab 15

13 Resources & References Extension Toxicology Network A Pesticide Information Project of Cooperative Extension Offices of Cornell University, Oregon State University, the University of Idaho, and the University of California at Davis and the Institute for Environmental Toxicology, Michigan State University. Harris, W What happens when a keystone species goes extinct? Conservation Issues, Environmental Science, How Stuff Works; NIH Mercury. U.S. National Library of Medicine, Article NRDA What are PCBs? Wisconsin Department of Natural Resources. The Human Impact and Biodiversity, HASPI Medical Biology Lab

14 424 The Human Impact and Biodiversity, HASPI Medical Biology Lab 15

Lesson 7: Biomagnification

Lesson 7: Biomagnification Lesson 7: Biomagnification ESTIMATED TIME: Three 1 hour class periods MATERIALS: For the teacher Biomagnification Transparency 12 circles cut with a hole punch (small confetti) Overhead projector Per group

More information

Classifying our Biotic Environment (Trophic Levels) Ecology. Ecology is study how things interact with other and else in the.

Classifying our Biotic Environment (Trophic Levels) Ecology. Ecology is study how things interact with other and else in the. Ecology Ecology is study how things interact with other and else in the. Ecologists focus their attention on in order to organize their studies. Ecosystems can be very large or very small. For example:

More information

Where Do All the Toxins Go? (External View)

Where Do All the Toxins Go? (External View) Toxic Chemicals in the Great Lakes 2 of Two Activities Where Do All the Toxins Go? (External View) Bioaccumulation is the build-up of chemicals in an organism s body the longer an organism lives, the more

More information

2. 4 dispersion patterns: clumped, uniform, random, gradient

2. 4 dispersion patterns: clumped, uniform, random, gradient Honors Biology Unit 5 Chapter 36 POPULATION ECOLOGY 1. 13 levels of organization in biology 2. 4 dispersion patterns: clumped, uniform, random, gradient 3. population growth curves: 3 phases of growth

More information

S Describe bioaccumulation and explain its potential impact on consumers. Examples: bioaccumulations of DDT, lead, dioxins, PCBs, mercury

S Describe bioaccumulation and explain its potential impact on consumers. Examples: bioaccumulations of DDT, lead, dioxins, PCBs, mercury Bioaccumulation S2-1-03 Describe bioaccumulation and explain its potential impact on consumers. Examples: bioaccumulations of DDT, lead, dioxins, PCBs, mercury Bioaccumulation In an ecosystem undisturbed

More information

Toxic Contaminants in the Surficial Sediments of the Fore River, Maine. Natural Resource Damage Assessment Trustees Casco Bay Estuary Partnership

Toxic Contaminants in the Surficial Sediments of the Fore River, Maine. Natural Resource Damage Assessment Trustees Casco Bay Estuary Partnership Toxic Contaminants in the Surficial Sediments of the Fore River, Maine Natural Resource Damage Assessment Trustees Casco Bay Estuary Partnership Sediment Contaminants Serious threat to estuarine ecosystems

More information

Pollution. Pollution refers any substance introduced into the environment that has harmful or poisonous effects

Pollution. Pollution refers any substance introduced into the environment that has harmful or poisonous effects Pollution Objective 2.2.1 Infer how human activities (including population growth, pollution, global warming, burning of fossil fuels, habitat destruction, and introduction of non-native species) may impact

More information

NOTES 12.4: HUMAN ISSUES, IMPACTS, & SOLUTIONS. Pages ,

NOTES 12.4: HUMAN ISSUES, IMPACTS, & SOLUTIONS. Pages , NOTES 12.4: HUMAN ISSUES, IMPACTS, & SOLUTIONS Pages 435-437, 440-452 ENVIRONMENTAL SCIENCE The study of the interactions between humans and their own environment Earth s Layers Geosphere Earth s rock

More information

TOXIC CHEMICALS MADELINE ROBERTS

TOXIC CHEMICALS MADELINE ROBERTS TOXIC CHEMICALS MADELINE ROBERTS Sources of impact: Not only do the toxic chemicals that surround us every day effect our health, but they also contribute a great deal to global warming while destroying

More information

Water Quality and Soils

Water Quality and Soils Water Quality and Soils Fresh Water Fresh surface water, groundwater, soil water 0.8% total earth water What s in the Water? Dissolved organic and inorganic compounds Particulate organics and inorganics

More information

Dioxins in Our Food Supply and Their Effect on Human Health

Dioxins in Our Food Supply and Their Effect on Human Health Rollover icons for more information Dioxins in Our Food Supply and Their Effect on Human Health What are dioxins? Why are they important? Dioxins are environmental contaminants released into the air from

More information

STAAR Science Tutorial 55 TEK 8.11D: Human Dependence on Ocean Systems

STAAR Science Tutorial 55 TEK 8.11D: Human Dependence on Ocean Systems Name: Teacher: Pd. Date: STAAR Science Tutorial 55 TEK 8.11D: Human Dependence on Ocean Systems TEK 8.11D: Recognize human dependence on ocean systems and explain how human activities such as runoff, artificial

More information

Why Can t I Eat this Fish?

Why Can t I Eat this Fish? Details Learning Resources Completion Time: Less than a week Permission: Download, Share, and Remix Why Can t I Eat this Fish? Overview Students will discover how a simple action such as turning on a television

More information

Section 6.1: A Changing Landscape. Name: Block: Date:

Section 6.1: A Changing Landscape. Name: Block: Date: Section 6.1: A Changing Landscape Name: Block: Date: 1. Our daily activities impact the quality of Earth s natural resources:,, a. These activities are:,, 2. The Effect of Human Activity :Agriculture a.

More information

Connecting. & Human Health

Connecting. & Human Health Connecting Environmental & Human Health The Body Burden Studies Recommends that pediatricians familiarize themselves with the potential adverse health effects of chemicals in the environment. Umbilical

More information

Toxic Contaminants in the Surficial Sediments of the Fore River, Maine

Toxic Contaminants in the Surficial Sediments of the Fore River, Maine University of Southern Maine USM Digital Commons Presentations Casco Bay Estuary Partnership (CBEP) 2009 Toxic Contaminants in the Surficial Sediments of the Fore River, Maine Mike Doan Friends of Casco

More information

Bioaccumulation & Biomagnification

Bioaccumulation & Biomagnification Page 1 of 5 Bioaccumulation & Biomagnification 04/03/02 Based on Mader, Sylvia S. 1996. Biology - 5th Ed. WCB and Cox, G.W. 1997. Conservation Biology - 2nd ed. WCB In this section, we will examine how

More information

Ocean Pollution Homework & Lecture Notes Part II (2 points)

Ocean Pollution Homework & Lecture Notes Part II (2 points) Name: Ocean Pollution Homework & Lec. Notes Part II (Topic 13B) Section: Ocean Pollution Homework & Lecture Notes Part II (2 points) Stamp Read the ocean pollution reading assignment (13B). Then, answer

More information

Write your own lab Spectrophotometry/Colorimetry

Write your own lab Spectrophotometry/Colorimetry Sheila MacIntyre University of Pennsylvania Spectroscopy Nitrate Concentration Determination Teacher Section: Background Information: In this lab students will determine the concentration of nitrates in

More information

Chapter Using Resources Wisely: Soil, Freshwater, & Atmospheric Resources Key Questions: 1) Why is soil important and how do we protect it?

Chapter Using Resources Wisely: Soil, Freshwater, & Atmospheric Resources Key Questions: 1) Why is soil important and how do we protect it? Chapter 6 6.2 Using Resources Wisely: Soil, Freshwater, & Atmospheric Resources Key Questions: 1) Why is soil important and how do we protect it? 2) What are the primary sources of water pollution? 3)

More information

IMPACT OF WASTE ON HEALTH AND THE ENVIRONMENT. CURE Jaipur, Rajasthan

IMPACT OF WASTE ON HEALTH AND THE ENVIRONMENT. CURE Jaipur, Rajasthan IMPACT OF WASTE ON HEALTH AND THE ENVIRONMENT CURE Jaipur, Rajasthan Able to Understand Awareness on the potential solid waste (hazardous, non hazardous and mixed waste) disposal poses to human health

More information

AP Environmental Science. Living World Part 2

AP Environmental Science. Living World Part 2 AP Environmental Science Living World Part 2 Symbiosis close and long term interactions between species -Obligate- required for one of the organisms to survive- Lichen -Facultative-beneficial but not

More information

Sunlight (solar energy) CO2 + H2O. Cellular Respiration (mitochondria) 36 ATP

Sunlight (solar energy) CO2 + H2O. Cellular Respiration (mitochondria) 36 ATP Aerobic & Anaerobic Conditions HASPI Medical Biology Lab 11 Background/Introduction The Flow of Energy & Cycling of Matter Photosynthesis and cellular respiration (including aerobic and anaerobic respiration)

More information

Elemental Metals and Toxic Effects. Heavy Metals

Elemental Metals and Toxic Effects. Heavy Metals Elemental Metals and Toxic Effects Many communities may have high levels of toxic metals in their drinking water, particularly those served by from private wells, because of contamination or as a result

More information

5/12/15. We depend on environment for. Food Water Air Shelter Fuel, etc. Environmental science the study of the impact of humans on the environment

5/12/15. We depend on environment for. Food Water Air Shelter Fuel, etc. Environmental science the study of the impact of humans on the environment List examples of chemical pollution from industry, agriculture, or everyday use. What are some possible effects that these pollutants can have on the environment? Doerfler Biology I How are humans and

More information

Effects of Bioaccumulation on Ecosystems

Effects of Bioaccumulation on Ecosystems Effects of Bioaccumulation on Ecosystems Textbook pages 92 103 Section 2.3 Summary Before You Read Everyday activities, such as driving or heating your home, often pollute ecosystems. In your opinion,

More information

1 Environmental Problems

1 Environmental Problems CHAPTER 21 1 Environmental Problems SECTION Environmental Problems and Solutions BEFORE YOU READ After you read this section, you should be able to answer these questions: What is pollution? What are some

More information

Tag-a-Toxin. SC Science Standards:

Tag-a-Toxin. SC Science Standards: Tag-a-Toxin Objective: Students will model how pollutants are accumulated and passed from prey to predator in a freshwater food chain and will work with mathematic percentages. SC Science Standards: 5-2.4

More information

6-3 Biodiversity Slide 1 of 35

6-3 Biodiversity Slide 1 of 35 1 of 35 The Value of Biodiversity The Value of Biodiversity Biological diversity, or biodiversity, is the sum total of the genetically based variety of all organisms in the biosphere. Ecosystem diversity

More information

Soil Filtration as an Ecosystem Service

Soil Filtration as an Ecosystem Service Soil Filtration as an Ecosystem Service - Teacher Pages I recently created a lab for a 7th grade unit that included Ecosystem Services. I thought I should share what I learned, because it was a cool lab

More information

Overview of Chapter 21

Overview of Chapter 21 21 Water Pollution Overview of Chapter 21 Types of Water Pollution Water Quality Today Agricultural, Municipal, Industrial, Groundwater, Water pollution internationally Improving Water Quality Laws Controlling

More information

Mercury Are You at Risk?

Mercury Are You at Risk? Mercury Are You at Risk? Mercury Mercury is a heavy metal as indicated above by showing a pool ball floating on top of a cup of Mercury What is Mercury? A naturally occurring element that is found in air,

More information

Biodiversity Chapter 5 Jeopardy! Mrs. Rogic

Biodiversity Chapter 5 Jeopardy! Mrs. Rogic Biodiversity Chapter 5 Jeopardy! Mrs. Rogic List the three types of biodiversity! Which of the following habitats has the greatest richness? Species Habitat 1 Habitat 2 Habitat 3 Fox 20 0 0 Rabbit 100

More information

Module 12: Oceanography Topic 6 Content: Ocean Pollution Notes. Ocean Pollution

Module 12: Oceanography Topic 6 Content: Ocean Pollution Notes. Ocean Pollution Ocean Pollution 1 Ocean pollution is an important modern-day environmental issue. Pollution occurs when chemical, physical, and/or biological agents are introduced into an environment and cause undesirable

More information

Pesticides. Categories of Pesticides. Pesticides are chemicals designed to kill pests.

Pesticides. Categories of Pesticides. Pesticides are chemicals designed to kill pests. Pesticides Pesticides are chemicals designed to kill pests. http://www.youtube.com/watch?v=bckt2r xv6i&safe=active Categories of Pesticides 1. Insecticide: kills insects (ex: DDT) 2. Herbicide: kills weeds

More information

UAU102F University of Iceland

UAU102F University of Iceland Throstur Thorsteinsson ThrosturTh@hi.is Atrazine Herbicide, lead to widespread contamination in drinking water and is associated with birth defects and menstrual problems when consumed by humans at concentrations

More information

OGT Intervention. Ecology and Cellular Processes

OGT Intervention. Ecology and Cellular Processes OGT Intervention Ecology and Cellular Processes Ecology The study of relationships between living organisms and their environment Ecosystem- All of the organisms in an area and the nonliving factors (abiotic)

More information

Chapter 14. Water Pollution

Chapter 14. Water Pollution Chapter 14 Water Pollution The Chesapeake Bay Chesapeake Bay largest estuary in the US Pollutants: Excess nitrogen and phosphorus From 3 major sources: Consequence of increased nutrients Sediment increase

More information

OCEAN DEFENDERS. A little more help for your research!

OCEAN DEFENDERS. A little more help for your research! OCEAN DEFENDERS A little more help for your research! OCEANS Humans both depend on it and threaten it with their activities OCEANS Water covers nearly ¾ of the Earth s surface More than 50% of the world

More information

2. 2. Nutrient Cycles in Ecosystems. Before You Read. How are nutrients cycled in the biosphere? How does the carbon cycle work?

2. 2. Nutrient Cycles in Ecosystems. Before You Read. How are nutrients cycled in the biosphere? How does the carbon cycle work? Nutrient Cycles in Ecosystems Textbook pages 68 91 Section 2. 2 Summary Before You Read Like other organisms, your body relies on nutrients to stay healthy. Based on your current understanding, create

More information

Explain how human activities can impact chemical cycles. Explain how pollution can affect food chains.

Explain how human activities can impact chemical cycles. Explain how pollution can affect food chains. Objectives Explain how human activities can impact chemical cycles. Explain how pollution can affect food chains. Key Terms deforestation greenhouse effect global warming eutrophication acid rain pollution

More information

Chapter 6 Humans in the Biosphere. Dr. Bertolotti

Chapter 6 Humans in the Biosphere. Dr. Bertolotti Chapter 6 Humans in the Biosphere Dr. Bertolotti Essential Question How have human activities shaped local and global ecology? What is the relationship between resource use and sustainable development?

More information

Human Impact on the Environment

Human Impact on the Environment Human Impact on the Environment We share the Earth with a whole lot of other creatures We don t share very well. Human Activities Humans have always altered the Earth s ecosystems: Hunting, fishing, gathering

More information

2 Marine Ecosystems. Math Focus

2 Marine Ecosystems. Math Focus CHAPTER 3 2 Marine Ecosystems SECTION The Earth s Ecosystems BEFORE YOU READ After you read this section, you should be able to answer these questions: What abiotic factors affect marine ecosystems? What

More information

Louis Pasteur STEM Project

Louis Pasteur STEM Project Louis Pasteur 2015-2016 STEM Project Project Overview: The Effects of oil spills Oil is an organic fluid that has a lower density than water. When oil is spilled on water, it will float on the water surface

More information

9 th -12 th Grade Whale Watching Adventure Packet

9 th -12 th Grade Whale Watching Adventure Packet 9 th -12 th Grade Whale Watching Adventure Packet Teacher Information: This packet is designed for ninth grade through the twelfth grade and is based on the content standards adopted by the California

More information

NUTRIENT CYCLES AND HUMAN IMPACT NOTES

NUTRIENT CYCLES AND HUMAN IMPACT NOTES NUTRIENT CYCLES AND HUMAN IMPACT NOTES I. Nutrient Cycles Unlike energy in an ecosystem, which flows in one direction and decreases as it flows, matter is recycled within the biosphere. Matter passes through

More information

Disciplinary Core Ideas

Disciplinary Core Ideas HS-LS2-1 HS-LS2-1. Use mathematical and/or computational representations to support explanations of factors that affect carrying capacity of ecosystems at different scales. [Clarification Statement: Emphasis

More information

FOR TEACHERS ONLY The University of the State of New York REGENTS HIGH SCHOOL EXAMINATION

FOR TEACHERS ONLY The University of the State of New York REGENTS HIGH SCHOOL EXAMINATION FOR TEACHERS ONLY The University of the State of New York REGENTS HIGH SCHOOL EXAMINATION LIVING ENVIRONMENT Wednesday, January 25, 2017 9:15 a.m. to 12:15 p.m., only SCORING KEY AND RATING GUIDE Directions

More information

Birds, Bioaccumulation, and the Bay Overview for Instructors

Birds, Bioaccumulation, and the Bay Overview for Instructors Birds, Bioaccumulation, and the Bay Overview for Instructors Grade Level: 9 th -12 th Approximately 2 hours in length, can be broken into sections Objectives: At the end of this activity, students will:

More information

4.5. Issues with Pesticides. Non-Target Species

4.5. Issues with Pesticides. Non-Target Species Issues with Pesticides Pesticides have helped farmers reduce crop damage from pests and increase food production. Pesticides have also helped control populations of biting insects, such as mosquitoes,

More information

Keith R. Cooper, Ph.D. Dean of Research & Graduate Programs Liberty Science Center August 4, 2005

Keith R. Cooper, Ph.D. Dean of Research & Graduate Programs Liberty Science Center August 4, 2005 Keith R. Cooper, Ph.D. Dean of Research & Graduate Programs Liberty Science Center August 4, 2005 cooper@aesop.rutgers.edu What is Toxicology? The study of adverse effects that result from exposure to

More information

Hazards related to biological contaminants. Possible deleterious effects on human health caused by micro-organisms

Hazards related to biological contaminants. Possible deleterious effects on human health caused by micro-organisms Hazards related to biological contaminants Possible deleterious effects on human health caused by micro-organisms Infectious diseases (ingestion, cutaneous contact or inhalation) Immunoallergic, inflammatory

More information

MICROBIAL MINING. Overview. Grade Band: Topic: Wastewater Treatment. Real World Science Topics. Objectives

MICROBIAL MINING. Overview. Grade Band: Topic: Wastewater Treatment. Real World Science Topics. Objectives MICROBIAL MINING Overview In this activity, students explore the role biological technology plays in mining and wastewater treatment. Students research how microorganisms are being used to treat and restore

More information

Contaminants and Health Risks

Contaminants and Health Risks Contaminants and Health Risks Contaminants Fish and other aquatic organisms are indicators of the environmental health of our waterways. Certain chemicals tend to accumulate in fish. The chemicals currently

More information

Lab # Relationships and Biodiversity

Lab # Relationships and Biodiversity Name: Period: Date: Lab # Relationships and Biodiversity Introduction: Botana curus is a valuable plant because it produces Curol, a compound used for treating certain kinds of cancer. Curol cannot be

More information

Chemicals Life- Cycle Brief

Chemicals Life- Cycle Brief UNEP Chemicals Life- Cycle Brief United Nations Environment Programme Secretariat of the Basel, Rotterdam and Stockholm Conventions Geneva and Rome Secretariat of the Basel, Rotterdam and Stockholm Conventions

More information

AP Biology. Ecosystems

AP Biology. Ecosystems Ecosystems Studying organisms in their environment organism population community ecosystem biosphere Essential questions What limits the production in ecosystems? How do nutrients move in the ecosystem?

More information

Characteristics of Mercury and other Metals

Characteristics of Mercury and other Metals Characteristics of Mercury and other Metals Ben Hodges Physical Transport Lynn Katz Surface/Water Chemistry Howard Liljestrand- Air/Water Chemistry The University of Texas at Austin 8 February 2002 Metals

More information

2.1 Energy Flow in Ecosystems Student Notes

2.1 Energy Flow in Ecosystems Student Notes 2.1 Energy Flow in Ecosystems Student Notes General Information Biomass is Biomass is also sometimes used to measure the mass of organic materials that are used to produce biofuels such as biogas. Biomass

More information

Polychlorinated Biphenyls (PCBs)

Polychlorinated Biphenyls (PCBs) ToxFAQs TM for Polychlorinated Biphenyls (PCBs) February 2001 This fact sheet answers the most frequently asked health questions about polychlorinated biphenyls (PCBs). For more information, you may call

More information

HUMAN IMPACT on the BIOSPHERE Chapter 6-3 BIODIVERSITY

HUMAN IMPACT on the BIOSPHERE Chapter 6-3 BIODIVERSITY HUMAN IMPACT on the BIOSPHERE Chapter 6-3 BIODIVERSITY The sum of the genetically based variety of all the organisms in the BIODIVERSITY biosphere = Biodiversity gives stability to the ecosystems that

More information

Marine Debris Lesson Plans

Marine Debris Lesson Plans Marine Debris Lesson Plans Instructional Objectives 1. Students will be able to define and identify different types of marine debris. 2. Students will understand how marine debris gets into the environment.

More information

13-14 LL Final Exam (Science) Biology B Assessment ID: dna.5702 ib LL Final Exam (Science) Biology B

13-14 LL Final Exam (Science) Biology B Assessment ID: dna.5702 ib LL Final Exam (Science) Biology B 13-14 LL Final Exam (Science) Biology B Generated On March 26, 2014, 3:02 PM PDT 1 An ecosystem that has a wide VARIETY of species within it is said to have a large. A. population B. habitat C. niche D.

More information

2.2 Communities and Ecosystems

2.2 Communities and Ecosystems 2.2 Communities and Ecosystems A community = all the biotic (living) components of a habitat. Tropical Rainforest is a community of plants, animals, bacteria, and fungi Sloths are famous for their green

More information

ALAGU JOTHI ACADEMY. (An International Standard CBSE Sr. Sec. School) BIOLOGY QUESTION BANK 10 OUR ENVIRONMENT

ALAGU JOTHI ACADEMY. (An International Standard CBSE Sr. Sec. School) BIOLOGY QUESTION BANK 10 OUR ENVIRONMENT ALAGU JOTHI ACADEMY (An International Standard CBSE Sr. Sec. School) BIOLOGY QUESTION BANK 10 OUR ENVIRONMENT 1. (a) What is environmental pollution? (b) Distinguish between biodegradable and non-biodegradable

More information

Human Effect on Resources

Human Effect on Resources Think of the ocean, and you may imagine the fascinating creatures that live in its depths. The world s largest animal, the blue whale, and perhaps its fiercest predator, the great white shark, share the

More information

Keystone Biology Remediation B4: Ecology

Keystone Biology Remediation B4: Ecology Keystone Biology Remediation B4: Ecology Assessment Anchors: to describe the levels of ecological organization (i.e. organism, population, community, ecosystem, biome, biosphere) (B.4.1.1) to describe

More information

Interdependence Review

Interdependence Review Interdependence Review 1. What are the parts of an ecosystem? 2. How does an ecosystem respond to change? 3. What two key factors of climate determine a biome? 4. How does energy flow through an ecosystem?

More information

PUBLIC HEALTH STATEMENT JET FUELS (JP-5 and JP-8) CAS#:

PUBLIC HEALTH STATEMENT JET FUELS (JP-5 and JP-8) CAS#: This Public Health Statement is the summary chapter from the Toxicological Profile for Jet Fuels JP-5 and JP-8. It is one in a series of Public Health Statements about hazardous substances and their health

More information

Global warming, population growth, acid rain, eutrophication, CFCs/environmental toxins HUMAN IMPACTS

Global warming, population growth, acid rain, eutrophication, CFCs/environmental toxins HUMAN IMPACTS Global warming, population growth, acid rain, eutrophication, CFCs/environmental toxins HUMAN IMPACTS GLOBAL WARMING GLOBAL WARMING Trapping of warm air close to the Earth s surface due to emission of

More information

The Earth s Ecosystems: Biomes, Energy Flow, and Change. I. Biomes and Ecosystems are divisions of the biosphere.

The Earth s Ecosystems: Biomes, Energy Flow, and Change. I. Biomes and Ecosystems are divisions of the biosphere. The Earth s Ecosystems: Biomes, Energy Flow, and Change I. Biomes and Ecosystems are divisions of the biosphere. A. Biomes: Biomes are the largest divisions of the biosphere. in other words biomes have

More information

Lessons for Erie Times-NIE 9/25/12

Lessons for Erie Times-NIE 9/25/12 Lessons for Erie Times-NIE 9/25/12 Find two special NIE publications on PPCPs at the PA Sea Grant Website http://www.seagrant.psu.edu/ publications/greatlakes.htm Dose of Reality and Hidden chemicals in

More information

How much toxic contamination is in shellfish tissue and how has it changed over time?

How much toxic contamination is in shellfish tissue and how has it changed over time? PREP Environmental Data Report, December 17 Indicator: in the Great Bay and Hampton-Seabrook Estuaries Question How much toxic contamination is in shellfish tissue and how has it changed over time? Short

More information

Humans in the biosphere 6.1 A changing landscape

Humans in the biosphere 6.1 A changing landscape Humans in the biosphere 6.1 A changing landscape How do our daily activities affect the environment? Humans affect both regional and global environments Have major impacts on the quality of Earth s natural

More information

Youth make a solution of food coloring with a concentration of one part per million and discuss clean water standards.

Youth make a solution of food coloring with a concentration of one part per million and discuss clean water standards. One in a Million Overview: Youth make a solution of food coloring with a concentration of one part per million and discuss clean water standards. Substances dissolved in water can be present in very tiny

More information

12/13/2018 Allegan County Health Department FAQs Questions and Answers for the Otsego Area

12/13/2018 Allegan County Health Department FAQs Questions and Answers for the Otsego Area QUESTIONS AND ANSWERS Q#1. Callers are asking about the municipal water supply- is it safe, has it been tested, is it going to get retested for all the things the private wells have been tested for? A:

More information

Seafood and Aquaculture Issues: Communicating the Positive Message

Seafood and Aquaculture Issues: Communicating the Positive Message Seafood and Aquaculture Issues: Communicating the Positive Message John Ewart and Doris Hicks Delaware Sea Grant Marine Advisory Service 2016 North Central Aquaculture Conference March 12-13, 2016 Milwaukee,

More information

Deciding how to handle waste produced from manufacturing

Deciding how to handle waste produced from manufacturing 27 Reclaiming the Metal l a b o r at o ry Deciding how to handle waste produced from manufacturing is challenging. It can be diluted or incinerated, as you saw in previous activities. In some cases, it

More information

Resources that can be replaced, given a sufficient amount of time. Nonrenewable Resources: Food, oxygen, wood, wind, water.

Resources that can be replaced, given a sufficient amount of time. Nonrenewable Resources: Food, oxygen, wood, wind, water. What are the different types of resources? Renewable Resources- Resources that can be replaced, given a sufficient amount of time Ex: Food, oxygen, wood, wind, water Nonrenewable Resources: Once used up,

More information

Regents Living Environment Ecology and Human Impact on Ecosystems

Regents Living Environment Ecology and Human Impact on Ecosystems Regents Living Environment Ecology and Human Impact on Ecosystems Part I Ecology Ecology Vocabulary Pioneer Organisms Biosphere Ecosystem Community Population Succession Biotic Food web Autotroph Biomass

More information

Human Activity. and Ecosystems. How do human activities affect ecosystems? Lesson. p 6.LS2.5, 6.LS2.6, 6.LS4.1, ESSENTIAL QUESTION

Human Activity. and Ecosystems. How do human activities affect ecosystems? Lesson. p 6.LS2.5, 6.LS2.6, 6.LS4.1, ESSENTIAL QUESTION Lesson 4 Human Activity and Ecosystems ESSENTIAL QUESTION How do human activities affect ecosystems? By the end of this lesson, you should be able to describe the effects of human activities on ecosystems,

More information

Chapter 6 Section 1: Interconnected Planet. Key Vocabulary Terms 1

Chapter 6 Section 1: Interconnected Planet. Key Vocabulary Terms 1 Chapter 6 Section 1: Interconnected Planet Key Vocabulary Terms 1 Adapted from Holt Biology 2008 Nonrenewable energy resource formed from the remains of organisms that lived long ago; oil coal and natural

More information

OUR ENVIRONMENT VERY SHORT ANSWER TYPE QUESTIONS

OUR ENVIRONMENT VERY SHORT ANSWER TYPE QUESTIONS OUR ENVIRONMENT VERY SHORT ANSWER TYPE QUESTIONS [1 Mark] 1. What will happen if we kill all the organisms in one trophic level? Answer. If we kill all the organisms in one trophic level, the following

More information

ECOLOGY PART TWO REVIEW

ECOLOGY PART TWO REVIEW Name: KEY Date: NOVEMBER 30, 2016 Hour: ECOLOGY PART TWO REVIEW BIOGEOCHEMICAL CYCLES 1.What percentage of the atmosphere is made up of Nitrogen gas? 78% 2. In the process of nitrogen fixation and denitrification

More information

The last lecture talked about environmental systems in Jordan which are mountains, deserts, valleys, costal and marginal regions.

The last lecture talked about environmental systems in Jordan which are mountains, deserts, valleys, costal and marginal regions. The last lecture talked about environmental systems in Jordan which are mountains, deserts, valleys, costal and marginal regions. The environmental system forms what we call Food Pyramid or Food Chain.

More information

Changes in Biodiversity

Changes in Biodiversity Think of the ocean, and you may imagine the fascinating creatures that live in its depths. The world s largest animal, the blue whale, and perhaps its fiercest predator, the great white shark, share the

More information

Sustainable Eating. With Chef Jessica VanRoo October 26, 2011

Sustainable Eating. With Chef Jessica VanRoo October 26, 2011 Sustainable Eating With Chef Jessica VanRoo October 26, 2011 What is sustainable eating? Make decisions based on the path your food took Impacts include global warming, loss of biodiversity, air and water

More information

November 9, National Organic Standards Board Fall 2011 Meeting Savannah, GA. Re. Comments on Aquaculture Materials. Dear Board Members:

November 9, National Organic Standards Board Fall 2011 Meeting Savannah, GA. Re. Comments on Aquaculture Materials. Dear Board Members: November 9, 2011 National Organic Standards Board Fall 2011 Meeting Savannah, GA Re. Comments on Aquaculture Materials Dear Board Members: These comments are submitted on behalf of Beyond Pesticides. Beyond

More information

Copper. Public Health Statement for CAS# December 1990

Copper. Public Health Statement for CAS# December 1990 Public Health Statement for Copper CAS# 7440-50-8 December 1990 This Public Health Statement is the summary chapter from the Toxicological Profile for Copper. It is one in a series of Public Health Statements

More information

SEALEX, INC. MATERIAL SAFETY DATA SHEET IMMERBOND SILICONE ADHESIVE SEALANT PAGE: 1 OF 7 DATE PRINTED: 3/3/2008

SEALEX, INC. MATERIAL SAFETY DATA SHEET IMMERBOND SILICONE ADHESIVE SEALANT PAGE: 1 OF 7 DATE PRINTED: 3/3/2008 PAGE: 1 OF 7 ========== SECTION 1. CHEMICAL PRODUCT AND COMPANY IDENTIFICATION========== SEALEX, INC. PHONE: (231) 348-5020 8850 MOELLER DRIVE FAX: (231) 348-5255 HARBOR SPRINGS, MI 49740 E-MAIL: INFO@SEALEXINC.COM

More information

ENVIRONMENTAL POLLUTION ENVR-252 CHAPTER # 2

ENVIRONMENTAL POLLUTION ENVR-252 CHAPTER # 2 ENVIRONMENTAL POLLUTION ENVR-252 CHAPTER # 2 POLLUTION Pollution - addition of undesirable material into the environment as a result of human activities. The agents which cause environmental pollution

More information

Prevention of morbidity and mortality due to POPs pesticides in Morocco

Prevention of morbidity and mortality due to POPs pesticides in Morocco International POPs Elimination Project Fostering Active and Efficient Civil Society Participation in Preparation for Implementation of the Stockholm Convention Prevention of morbidity and mortality due

More information

Atrazine. What happens to atrazine when it enters the environment?

Atrazine. What happens to atrazine when it enters the environment? Atrazine What is atrazine? Atrazine is the common name for a herbicide that is widely used to kill weeds. It is used mostly on farms. Pure atrazine an odorless, white powder is not very volatile, reactive,

More information

Environmental Issues & Problems ENV 150. What do we mean by biodiversity? What do we mean by biodiversity? What do we mean by biodiversity?

Environmental Issues & Problems ENV 150. What do we mean by biodiversity? What do we mean by biodiversity? What do we mean by biodiversity? REVIEW Environmental Issues & Problems ENV 150 What do we mean by biodiversity? Guillaume Mauger Today: Loss of Biodiversity REVIEW REVIEW What do we mean by biodiversity? What do we mean by biodiversity?

More information

As you saw in the last activity, a computer is made of many parts,

As you saw in the last activity, a computer is made of many parts, 23 Producing Circuit Boards R EA D I N G As you saw in the last activity, a computer is made of many parts, each manufactured from one or more materials. One essential part of a computer, and of many other

More information

Water Quality Testing

Water Quality Testing Field Experience Water Quality Testing How s the Water? Overview Students will use chemical tests to determine the water quality of a local pond. Teacher Background: Water Quality In 1972 the Clean Water

More information

Community: an assemblage of species living close enough together for potential interactions How do organisms of different species interact?

Community: an assemblage of species living close enough together for potential interactions How do organisms of different species interact? 1 BIO 1101 Lecture 17 (Guided Notes) Chapter 20: Community Ecology 2 Community: an assemblage of species living close enough together for potential interactions How do organisms of different species interact?

More information

Soil Ecology Project. The Effect of Road Salt on Bacteria Density. Hope Duke, Irina Kolesnik and Clare O Brien Mr. Brock Biology 9 Honors

Soil Ecology Project. The Effect of Road Salt on Bacteria Density. Hope Duke, Irina Kolesnik and Clare O Brien Mr. Brock Biology 9 Honors Soil Ecology Project The Effect of Road Salt on Bacteria Density Hope Duke, Irina Kolesnik and Clare O Brien Mr. Brock Biology 9 Honors 5/31/2012 A. Background Report Soil is made out of four basic components:

More information

4.C.3.a.Using one of the following examples, explain how population ability to respond to changes in the environment is affected by genetic

4.C.3.a.Using one of the following examples, explain how population ability to respond to changes in the environment is affected by genetic 4.C.3.a.Using one of the following examples, explain how population ability to respond to changes in the environment is affected by genetic diversity. Species and populations with little genetic diversity

More information