Nitrogen Cycle

4. the action of a solution forming from a substance
5. a draining away of water
8. made of the layers of gases surrounding a planet or other celestial body
9. the state or process of rotting; decay.
10. the conversion of soil nitrate to the nitrogen gases N2O and N2 by a diverse arra
11. the process of turning vapor to water
13. An algal bloom or algae bloom is a rapid increase or accumulation in the population
14. a member of a large group of unicellular microorganisms
16. a repeating cycle of processes during which nitrogen moves through both living and non-living things
19. a natural fuel such as coal or gas, formed in the geological past from the remains of living organisms.

1. the process by which green plants and some other organisms use sunlight to synthesize foods from carbon dioxide and water
2. the chemical processes by which atmospheric nitrogen is assimilated into organic compounds
3. the process of burning something.
6. a colorless, odorless gas produced by burning carbon and organic compounds and by respiration
7. dried out land
12. the process of turning from liquid to vapor
15. an underground layer of water-bearing
17. the action of breathing
18. a simple sugar which is an important energy source in living organisms and is a component of many carbohydrates.