Biogeochemical Cycles

2. Carbohydrates (glucose) are used to make ATP energy for metabolic reactions
6. (2 words) Process in which water circulates between Earth’s oceans, atmosphere, and land
8. The breaking down of materials by rotting, decay, or microorganisms
9. Turning atmospheric nitrogen into useable forms
11. (2 words) A system that transfers carbon from one part of the environment to another
12. The fourth most abundant element in the universe and essential to life on Earth
13. Nitrifying bacteria convert unusable forms of soil nitrogen into useable forms
15. Process by which droplets of water fall to Earth as rain, snow, sleet, or hail
17. A process by which green plants turn carbon dioxide into carbohydrates
18. Carbon molecules bonded to hydrogen molecules
19. Process by which water vapor in the air is changed into liquid water
20. (2 words) A system that changes atmospheric nitrogen into usable forms
21. (2 words) Glucose and oxygen yield carbon dioxide, water, and ATP energy

1. The process of burning something
3. (2 words) Matter originating from a living organism; contains hydrocarbons
4. The most abundant element in the atmosphere, it is essential for life
5. Microscopic marine plants that use carbon to make shells of calcium carbonate
7. (2 words) Carbon dioxide, water, and sunlight yields glucose and oxygen
10. The downward movement of water from land surfaces into soil or porous rock
14. Precipitation not absorbed into soil that moved to water collection points
16. Process by which water changes from a liquid into a gas