ecology

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Across
  1. 3. an organism that gets the product
  2. 6. living things within an ecosystem
  3. 9. a system of interlocking and interpreting food chains
  4. 10. each of several hierarchical levels in an ecosystem
  5. 11. plant eating animals
  6. 13. a individual animal, plant or single cell organism
  7. 14. on organism that searches for and collects discarded items
  8. 18. meat eating animal
  9. 19. relations of one organism to another
  10. 20. a hierarchical series of organisms each dependent on the next source of food
  11. 21. plant and meat eating animal
  12. 22. an organism that live on or in another species
Down
  1. 1. group of living things in one place
  2. 2. an animal that is caught or killed by predators
  3. 3. all the inhabitants of a particular area
  4. 4. a natural home or environment for animals, plants, or organisms
  5. 5. organisms that makes another thing grow
  6. 7. an organism that can form nutritional organic substances
  7. 8. an organism that decomposes organic material
  8. 11. an organism deriving its nutritional requirements
  9. 12. a region of the surface
  10. 15. nonliving things within an ecosystem
  11. 16. an animal that prays on others
  12. 17. an animal or plant the parasite lives on