The Nitrogen Cycle

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Across
  1. 2. -
  2. 4. release excess nitrogen into the atmosphere
  3. 5. -
  4. 8. organism that converts nitrogen to different forms
  5. 9. nitrogen in ammonia into nitrates and nitrites
Down
  1. 1. -
  2. 3. -
  3. 6. decomposers breakdown nitrogen-rich waste and put it in the soil
  4. 7. adds too much nitrogen to the soil