3B Izaiah Miles

2. This is the largest reservoir of carbon on Earth.
3. the process of removing the nitrates or nitrites from (soil, air, or water) by chemical reduction.
4. the chemical element with the symbol N and atomic number 7.
7. 97% of the earth's water is
11. decomposition with production of ammonia or ammonium compounds
12. the continuous movement of water on, above and below the surface of the Earth.
14. Most of water on Earth is
16. the process of converting (ammonia or another nitrogen compound) into nitrites or nitrates.
17. Plants can change carbon dioxide to carbohydrates by
18. change into gas or steam

1. the falling to earth of any form of water
5. a chemical process by which molecular nitrogen (N 2) in the air is converted into ammonia
6. Plants and animals need this element to make DNA, amino acids and proteins.
8. the formation of organic nitrogen compounds like amino acids from inorganic nitrogen compounds present in the environment.
9. a periodically repeated sequence of events
10. a biogeochemical process through which nitrogen is converted into many forms
13. They constitute a large domain of prokaryotic microorganisms.
15. the emission of water vapor from the leaves of plants