Ch 4 Ecosystems

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Across
  1. 3. any substance that damages the environment
  2. 5. available supplies for food, water, sunlight, and space in an environment
  3. 6. the process plants use to make sugar for food
  4. 8. an organism that makes its own food for energy
  5. 10. all of the conditions surrounding an organism
  6. 11. an organism that is eaten by another organism
  7. 13. the struggle for some limited resources
  8. 14. the outside layer of cells on the top and bottom of a leaf (2 words)
Down
  1. 1. new plants and animals that people bring into an ecosystem (2 words)
  2. 2. the process by which cells break down sugar to release energy ( 2 words)
  3. 4. an attempt tp preserve or protect an environment from harmful changes
  4. 7. a consumer that hunts and eats another animal to get energy
  5. 9. an organism that gets its energy by breaking down waste and dead organisms
  6. 12. an organism that can not make its own food