Animal Adaptation

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Across
  1. 3. flightless bird
  2. 7. the study on their function
  3. 8. shine with a soft tremulous
  4. 9. Very dry
  5. 11. animals have their digestive tracts
  6. 12. Living
  7. 13. To push or drive forward
Down
  1. 1. how the body maintains its internal temperature
  2. 2. how one conducts themselves
  3. 4. animal
  4. 5. Very great size
  5. 6. The only one around
  6. 8. held together in a particular way
  7. 10. food and drink are broken down into smaller parts