Nitrogen Cycle

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Across
  1. 2. Decomposers convert organic waste into ammonia
  2. 6. Process of converting nitrogen gas from the air into ammonia, done by nitrogen fixing bacteria
  3. 7. is the atmospheres most abundant element making up 78% of volume in the troposphere
  4. 8. Number of components of the nitrogen cycle
  5. 10. Plants of the bean & pea family, contains nodules of nitrogen-fixing bacteria
  6. 12. NO3
  7. 13. Bacteria changes the nitrates in soil or water to nitrogen gas and release it back into the atmosphere
  8. 14. Product of nitrogen decomposition
  9. 15. Nitrogen_____
Down
  1. 1. An abiotic source of fixing atmospheric nitrogen into nitrate compounds for the soil.
  2. 3. Substances in food that organisms need to grow
  3. 4. Low nitrogen availability limits a plants _____
  4. 5. When plants and other producers absorb and use nitrogen
  5. 9. Convert nitrogen in the remains of dead organisms into nitrogen compounds plants can use
  6. 11. The process where ammonia is converted to nitrate ions by bacteria in the soil