Carbon and nitrogen cycles and Symbiotic relationships

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Across
  1. 1. organisms living together causing one to benefit
  2. 4. molecules containing carbon
  3. 5. animals killing another animal for food
  4. 7. helps prevent the buildup of harmful nitrogen compounds, thus reducing the risk of water contamination and fish health problems.
  5. 10. both organisms benefit
Down
  1. 2. one benefits but it doesn't harm the other
  2. 3. two or more organisms fighting for resources
  3. 6. one benefits one is harmed
  4. 8. microorganisms whose action results in the conversion of nitrates in soil to free atmospheric nitrogen
  5. 9. plants and animals decompose and return to soil