Do Now: Draw this on Page 19 (Use the whole page) Reservoirs Atmosphere Ground Water Soils Ocean Surface Water Fertilizers Live Animals Animal Waste Rainwater Dead Plants and Animals Live Plants
The Nitrogen Cycle Page 18
What is a process? A process is a series of actions, changes, or functions bringing about one result The nutrient cycles are similar to any other process, because all nutrient cycles bring about the same result, which is returning the nutrients to the Earth.
This is the nitrogen cycle, Nitrogen is the most abundant element in the atmosphere and is essential to all life. Atmosphere: the thin layer of gasses that surround Earth Earth s atmosphere is approximately 70-71% nitrogen!!
How does nitrogen enter the body? The main way that nitrogen enters the body is by way of eating, another way it enters the body is by drinking water.
Related to the water cycle? The nitrogen cycle ties into the water cycle when the nitrogen comes out of the atmosphere in the rain. It absorbs into the ground and is taken in by the nitrogen fixing bacteria in the roots of the legumes. Which in turn is eaten by either humans or animals.
Nitrogen Fixation Fixation: The chemical processes by which atmospheric nitrogen is assimilated into organic compounds, especially by certain microorganisms as part of the nitrogen cycle Nitrification: To treat or combine with nitrogen or its compounds
What performs nitrogen fixation? Symbiotic bacteria with two different kinds of plants; root plants and leguminous plants (which are plants in the pea family) Free-living anaerobic bacteria Blue-green algae
- Nitrogen cycle is very important to the earth, because it returns the nitrogen to the earth and all of the creatures around us, which in turn returns the nitrogen to our bodies. - Denitrification: To remove nitrogen or nitrogen compounds from.
THE CARBON CYCLE
What Is Carbon? An element The basis of life of earth Found in rocks, oceans, atmosphere
Carbon Cycle The same carbon atoms are used repeatedly on earth. They cycle between the earth and the atmosphere. Biosphere: The earth and all of its organisms and environments
Plants Use Carbon Dioxide Plants pull carbon dioxide from the atmosphere and use it to make food photosynthesis. The carbon becomes part of the plant (stored food).
Animals Eat Plants When organisms eat plants, they take in the carbon and some of it becomes part of their own bodies.
Plants and Animal Die When plants and animals die, most of their bodies are decomposed and carbon atoms are returned to the atmosphere. Some are not decomposed fully and end up in deposits underground (oil, coal, etc.).
Carbon Slowly Returns to Atmosphere Carbon in rocks and underground deposits is released very slowly into the atmosphere. Geosphere: All of the rock at and below Earth s surface This process takes many years.
Carbon in Oceans Additional carbon is stored in the ocean. Many animals pull carbon from water to use in shells, etc. Animals die and carbon substances are deposited at the bottom of the ocean. Oceans contain earth s largest store of carbon.
Important Vocab Reservoir Global Location Flux A change
Cycle Repeats Over and Over and Over and Over
The Carbon Cycle
Human Impact Fossil fuels release carbon stores very slowly Burning anything releases more carbon into atmosphere especially fossil fuels Increased carbon dioxide in atmosphere increases global warming Fewer plants mean less CO 2 removed from atmosphere
Write the following lab questions on Page 18 (under notes) 1. How many stops can you make on your trip? 2. Was everyone s journey the same? Why or why not? 3. What would happen if we burnt too many fossil fuels? 4. Livestock farming creates a lot of animal waste. How would this affect the nitrogen cycle?
Look on board for assigned groups These will be your groups for the nitrogen activity today Groups 1-4 will start in the back with activity Groups 5-8 will start with book work