Across
- 7. Energy molecule with three phosphate groups
- 8. Nitrogen gas is "fixed" with hydrogen to produce this
- 9. Store and release carbon slowly
- 10. Greenhouse gases raise the global ___________
- 11. Coal, Oil, Gas
- 12. Process that converts ammonium and nitrate back to N2
- 13. Carbohydrates and oxygen are byproducts
- 14. Increases the solubility of phosphate
- 15. Part of the plant where photosynthesis occurs
- 19. Key element for all living things
- 21. Most abundant element in the air
- 22. Greenhouse gas; largely produced by cattle
Down
- 1. Carbon comp. that are eaten for usable energy (ex. sugar)
- 2. Chemicals that an organism must have to live and grow
- 3. Not of biological origin
- 4. Plants with nitrogen-fixing bacteria in their roots
- 5. Produced by nitrification
- 6. Absorb more carbon than they release
- 9. Glucose and Oxygen are reactants
- 16. Matter that always contains Carbon and Hydrogen
- 17. For structure and body functions
- 18. Respiration in the absence of oxygen
- 20. Respiration that uses oxygen