Do Now. The ocean contains a large diversity of organisms, but their numbers are starting to decline.

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2 Do Now The ocean contains a large diversity of organisms, but their numbers are starting to decline. What do you think is affecting marine life in the oceans? Why? Provide evidence to support your reasoning!

3 Activity # 1 Reading News Articles Break up into 6 groups At each station do the following: Read and discuss the article Write a summary of the article Highlight and record key words in article

4 Activity # 2 Concept Chart of Key Words Each group will present their article and key words As a class, we will make a conclusion

5 Do Now Yesterday, you read articles to figure out What is affecting Marine Life Review your article summaries, and be prepared to present your findings to the class.

6 OCEAN ACIDIFICATION

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11 Ocean Acidification Is Happening! So how can we solve this problem? What do we need to understand in order to accomplish this?

12 Activity # 3 Carbon Dice Game You are a carbon atom! Each group start at a carbon station. Roll the dice to see where you will go! Once you hit all the carbon sources, you are DONE In your group, fill in the diagram

13 Do Now Look at the reservoirs you were in as a carbon atom. Where did you get stuck the longest? Why do you think that happened?

14 Do Now Please finish your virtual labs!

15 The Carbon Cycle

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17 What is a Carbon Sink? A natural or artificial reservoir, such as the forest, ocean, soil, and atmosphere, that have the ability to absorb carbon containing chemical compounds Absorbs more than it puts out!

18 Carbon Cycle Carbon enters the atmosphere as Carbon Dioxide (CO2) from: Respiration Combustion Burning fossil fuels Coal Natural gas Oil Volcanoes Decomposition

19 Cellular Respiration - Organisms take in oxygen from the air (and eat to obtain glucose) - Animals and plants (yes, plants!) give off CO2

20 Carbon Cycle Continued Carbon dioxide is absorbed back into the ecosystem by producers to make carbohydrates in photosynthesis. These producers then put off oxygen as a byproduct!

21 PhotosynthEsiS - Plants take in CO2 from the atmosphere and give off oxygen - Fossil fuels are formed in the ground from decayed plants and animals over a long period of time - Crude oil, coal, natural gas, heavy oils = fossil fuels

22 Review: What type of Metabolism? Cellular respiration organic molecules are broken down to release energy for use by the cell -type of process: Photosynthesis light energy from the Sun is converted to chemical energy for use by the cell -Type of Process:

23 Carbon Cycle Continued Animals feed on the plants. Thus passing the carbon compounds along the food chain. Most of the carbon these animals consume, however, is exhaled as carbon dioxide. (respiration) The animals and plants then eventually die.

24 Carbon Cycle Continued The dead organisms are eaten by decomposers. The carbon that was in their bodies is then returned to the atmosphere as carbon dioxide. In some circumstances the process of decomposition is prevented. The decomposed plants and animals may then be available as fossil fuel in the future for combustion.

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28 Do Now 1. Photosynthesis 2. Cellular respiration 3. Glucose 4. Oxygen 5. Chloroplasts 6. Mitochondria 7. Carbon Dioxide

29 Do Now Look at the two pictures below, Which one is an acid? Which one is a base? How do you know?

30 What is ph? ph- Measure of concentration of hydrogen ions in a solution Acids- Release Hydrogen Ions (H+). Tastes Sour. Ex: HCl Bases- Release Hydroxide Ions (OH-). Taste Bitter. (a.k.a Alkaline) Ex: NaOH Neutral Number of H+ = Number of OH+

31 Acid and Bases ph Paper: Indicates the number of H+ ions by means of a number value. Litmus Paper: Red: Stays red in a Acid Turns Blue in a Base Blue: Stays Blue in Base Turns Red in Acid

32 Homeostasis The tendency of a system, especially the physiological system to maintain internal stability, owing to the coordinated response of its parts to any situation or stimulus that would tend to disturb normal condition or function. The human body has a ph a little above 7

33 Do Now Draw a beaker with an acidic solution. Hand in your virtual lab with your partner (I will choose one)

34 Do Now How does CO2 get into the ocean? How is CO2 making the water more acidic? Think about this!

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36 Ocean Acidification

37 DO NOW Notebooks out Why is carbon important for us? What are the formulas for: Photosynthesis & Cellular respiration?

38 Why do we need Carbon?! Animals produce carbon dioxide Producers absorb that and release oxygen as a byproduct which is what we need for survival. Oxygen is then used in respiration to help make energy!!

39 Human Impact on The Oceans Two major ways that humans drastically impact the amount of CO2 expelled on earth: 1. Fossil Fuel Emissions (coal, oil, petroleum) 2. Deforestation

40 Carbon Cycle Continued Carbon dioxide expelled into the atmosphere can be taken up by plants, or by the process of diffusion into the water. When CO2 diffuses into the water, it causes the ph of the ocean to lower. Why?

41 Carbon in the Ocean When carbon dioxide is dissolved in oceans: 1. Can bind to H2O to form carbonic acid 2. Carbonic acid then can bind to carbonate ions to form bicarbonate ions. a. Carbonate ions usually bind to calcium to form calcium carbonate b. Calcium carbonate is used by many animals to form their shells and skeletons. They can t use bicarbonate ions.

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46 Ocean Acidification International Conference Who are the stakeholders?

47 Stakeholders 1. organisms in ocean 2. Public 3. Recreation and Travel industry 4. Transportation Industry 5. Energy Companies 6. Fishing Industry

48 Human Impact Today s global population approximately 7.4 billion people Year 2300 = 36 billion people! How does each person on earth affect the carbon cycle? Does everyone have the same influence on the planet?

49 Your Carbon Footprint Carbon Footprint 1 Carbon Footprint 2 Carbon Footprint 3

50 Carbon Footprint Videos