Across
- 2. Process where decomposers break down dead organisms into ammonia (NH3)
- 4. Agricultural use for nitrogen
- 6. This element has the symbol N
- 8. The process where plants absorb nitrogen through their roots
- 12. What process converts ammonia to nitrate?
- 13. Result of excess fertilizer runoff into water
Down
- 1. ______ occurs when bacteria convert nitrate back into nitrogen gas
- 3. Humans add too much nitrogen to the cycle and disrupt ecosystems by the _______ of fossil fuels
- 5. The ocean is an example of a(n)_____ reservoir
- 7. Misuse of nitrogen disrupts the cycle and leads to the ______ of lakes and aquifers
- 9. Nitrous oxide is a _______ gas
- 10. Alternate process to fix nitrogen (not nitrogen fixation, Hint: storms!)
- 11. Most organisms cannot use nitrogen in the ____ state