Across
- 1. produced from animal and plant waste
- 4. bacteria transforms nitrite into nitrogen gas
- 8. when bacteria transform waste into ammonia
- 9. an important part of the backbone for DNA
- 11. bacteria transform ammonia into nitrate
- 12. a way nitrogen gas is fixed to be usable
Down
- 1. plants absorb nitrate (NO3)
- 2. main organisms that transform the forms of nitrogen
- 3. when bacteria or lightning break the bond in N2
- 5. the breakdown of decay into carbon, nitrogen, and phosphorus
- 6. the most abundant gas in the atmosphere
- 7. the most usable form of nitrogen
- 8. the only form of energy used in cells
- 10. a molecule that holds the genetic code