Carbon and nitrogen cycling
Post on 05-Jul-2015
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- 1. Carbon and Nitrogen Cycling
2. What is a carbon atom?
- #6 on the periodic table. Its symbol is C.
- All living organisms are based on the carbon atom.
- Carbon atoms continually move through living organisms, the oceans, the atmosphere, and the crust of the planet.
3. 4. What are the basics of the carbon cycle?
- Plants use carbon dioxide, water, and sunlight to make sugar molecules and oxygen.
- Animals take in oxygen and break down sugar molecules releasing energy, carbon dioxide, and water.
5. Simple picture 6. How do plants do it?
- The process by which producers use the energy from sunlight to produce sugar, which consumers convert to "fuel.
- 6H 2 O + 6CO 2----------> C 6 H 12 O 6 + 6O 2
- 6 molecules of water + 6 molecules of carbon dioxide = 1 molecule of sugar + 6 molecules of oxygen
7. What happens when plants cant absorb all the carbon we produce?
- Carbon builds up in our atmosphere and oceans. This may be a cause of Global Warming.
- Global Warming (Green house gases)
- Results (Green house gas results)
- OCEANS (Bill Nye the sink effect)
8. Carbon Cycle Summary
- Summarize the Carbon Cycle.
- Name two things you can do to lower the amount of Carbon in the atmosphere.
9. Nitrogen Atoms
- All life requires nitrogen. (protein and DNA are just a few uses)
- Air is 79% nitrogen gas (N 2 ).
- Nitrogen Cycle Movie
10. Nitrogen Cycling Basics
- Most organisms cannot use nitrogen in the form N 2or Free Nitrogen.
- It must be combined with other molecules or Fixed.
- This is done by bacteria who live in nodules on plant roots.
- This is an example of mutualism!
- Lightning also fixes Nitrogen.
11. Simple Picture 12. Remember
- Water, Carbon, and Nitrogen are all necessary to living things.
- All three are types of matter.
- All three are constantly being cycled through producers, consumers, decomposers, and the environment.