Chapter two crossword

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Across
  1. 2. where an organism lives
  2. 3. how many of one species in an environment at one time
  3. 5. the route that matter and energy is transferred
  4. 7. one species benefits and one species is not harmed
  5. 10. something that makes its food through sunlight
  6. 13. nonliving part of the environment
  7. 17. organisms unable to make their own food
  8. 18. role of an organism in its environment
Down
  1. 1. relation ship were both organisms benefit
  2. 3. one species is benefitted one is harmed
  3. 4. different populations interacting in the same area a the same time
  4. 6. link represented by each organism in a food chain
  5. 8. total weight of living organisms at the trophic level
  6. 9. study of organisms and their environments
  7. 11. living part of the earths environments
  8. 12. populations in a community
  9. 14. shows the possible feeding relationship in a community
  10. 15. permanent association between two or more organisms
  11. 16. organisms that breach down and absorb dead organic matter