Sustainability

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Across
  1. 4. The__________ prohibits transporting live or dead wild animals, or their parts, across state borders without a federal permi
  2. 7. Birds and amphibians can act as early warnings of environmental change. What type of species are they?
  3. 8. Many invasive species have no natural predators, which can contribute to rapid population growth.
  4. 9. A species may be vulnerable to extinction if it has a low reproduction rate or feeds at_____trophic level
Down
  1. 1. Fire ants were accidentally introduced to the United States in lumber from
  2. 2. When a species is no longer found anywhere on Earth, it has undergone .
  3. 3. A species with so few individuals that it could soon become extinct is considered .
  4. 5. Name a keystone species other than the beaver covered in class
  5. 6. Under ______________listed species threatened with extinction cannot be commercially trade