biology

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Across
  1. 3. what turns ammonia into nitrates
  2. 7. one benefits and one is unharmed
  3. 9. one animal stalks kills and
  4. 10. both benefit
Down
  1. 1. takes nitrates and puts it in the air as nitrigen gas
  2. 2. what turns nitrogen into the air into usable nitrogen
  3. 4. how animals get their carbon
  4. 5. both are harmed
  5. 6. organism that can produce its own needs
  6. 8. organism that eats other organism for nutrients