Ecology

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Across
  1. 2. part of earth where organisms can live
  2. 6. a ___ community is stable and contains many types of organisms
  3. 7. something harmful to organisms that is added to an environment
  4. 8. living factors in an environment
  5. 10. rain that contains sulfuric or nitric acid
  6. 12. ecosystem covering a large area like an ocean or a desert
  7. 15. resources Earth cannot replace, such as minerals
  8. 17. an __ is all the interactions among the populations of a community and its nonliving parts
Down
  1. 1. used by organisms to live; water, air, sun
  2. 3. when a species have few members left
  3. 4. all organisms ___ with living and nonliving things
  4. 5. fuel formed long ago from remains of organisms
  5. 9. various populations living in one area
  6. 11. number of an organism living in a set area
  7. 13. place an organism lives
  8. 14. process by which a community changes over time
  9. 16. study of interactions among living and nonliving parts of an environment