Biogeochemical

3. any liquid or frozen water that forms in the atmosphere and falls back to earth
5. a biogeochemical process through which nitrogen is converted into many forms
7. a nonmetallic element that makes up about 78 percent of the atmosphere by volume
10. carbon dioxide or other gaseous carbon compounds released into the atmosphere
11. the process by which bacteria in soil and water oxidize ammonia and ammonium ions and forms nitrites and nitrates
14. a colorless, orderless, and highly flammable gas
16. any body of water found on Earth's surface
17. water that exists underground in saturated zones beneath the land surface

1. when anything solid turns into a gas without first becoming liquid
2. the process of gaseous water turning into liquid water
4. a nonmetallic element that is found in the blood, muscles, nerves, etc
6. the process that changes liquid water to gaseous water
8. the continuous movement of water within the earth and atmosphere
9. describes how carbon moves between the atmosphere, soils, living creatures,the ocean, and human resources
12. the evaporation of water from a plant's leaves, stem, or flowers
13. the process by which nitrate is reduced to nitrogen gas by soil microbes when oxygen is not present
15. a nonmetallic element that exists in its free form as a colorless odorless gas