Across
- 4. Gas to a liquid
- 11. Releasing N2 back into the atmosphere
- 13. Fungi and Bacteria connect all trophic levels
- 18. Water falling from clouds
- 19. Ammonia into NO2- or NO3-
- 20. Water vapor leaving plant leaves
- 21. Organic material buried and compacted
- 23. Movement of water underground
Down
- 1. Solid to a gas
- 2. Using sugar for energy releasing CO2
- 3. __________ ____________ of biomass, energy, and numbers follow 10% rule
- 5. Nitrates or nitrites into NH3
- 6. Driver of all the cycles
- 7. Plant uptake of nitrogen
- 8. Water soaking into the soil
- 9. Underground collection of water
- 10. Do not need other organisms for energy
- 12. Must get energy from an autotroph
- 14. Liquid to gas at the surface
- 15. Rapidly reacting with oxygen releasing CO2 and water
- 16. Gaseous N2 into ammonia, nitrites, or nitrates
- 17. Fixing carbon dioxide into sugar
- 22. Water flowing on a surface down gravity