Chapter 3

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Across
  1. 4. of Tolerance ability of organism to survive changes in an environment
  2. 5. Advantage ability of organism to survive more easily in a shared environment
  3. 8. ecosystems that maintain constant levels
  4. 9. Succession organisms that live in an environment that they did not live in before
Down
  1. 1. all ecosystems on the earth
  2. 2. environment where creature lives
  3. 3. Succession ecosystem that has been partly destroyed that still have remnants of old ecosystem
  4. 6. group of similar organisms
  5. 7. scientist who studies relationship between organisms and their environment