Unit 6 Lessons 7 + 8

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Across
  1. 2. Humans are this category of living thing.
  2. 4. Required
  3. 9. An empty stretch of land
  4. 11. An animal at risk of extinction is ______.
  5. 13. An animal that no longer exists is ______.
  6. 14. The removal of waste and litter
  7. 15. Plant
  8. 16. _______ pets are often illegal.
Down
  1. 1. A toxic gas
  2. 3. Related to money/economics
  3. 5. Beside
  4. 6. Worldwide
  5. 7. Representing another person
  6. 8. How many colors are in a rainbow?
  7. 10. Poison
  8. 12. A bird's home