Human Impact on Ecosystems & Ecology

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Across
  1. 1. a group of organisms interacting with their environment as a unit
  2. 3. a source of CFCs
  3. 4. a close relationship between 2 organisms of different species in which at least one of them benefit
  4. 7. pollution that occurs on farms
  5. 9. members of the same species living in an area
  6. 10. pollution that occurs from factories
  7. 12. addition of nutrients to fresh water
  8. 14. Liquefied waste material produced by animals
  9. 15. non-living factors
Down
  1. 2. a pollutant that causes ozone depletion
  2. 5. any harmful addition to the environment
  3. 6. the act of one organism killing another organism for food
  4. 8. an organism that feeds on a host, causing harm
  5. 11. pollution made in the home
  6. 13. Careful management of natural resources to protect the environment