The Earth Without People - Vocabulary

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Across
  1. 3. the act of lowering something or someone to a less respected state
  2. 4. "for this reason," or "therefore"
  3. 6. someone who is calm and untroubled Vulnerable capable of being wounded or hurt
  4. 9. animals
  5. 10. keep in safety and protect from harm, decay, loss, or destruction
  6. 11. immaculately clean or has never been used
  7. 12. Something that is growing, spreading or multiplying really quickly
  8. 15. to great in size or force or extent as to elicit awe
Down
  1. 1. someone who rebels and becomes an outlaw
  2. 2. a collection of live animals that people visit, study, or keep as pets
  3. 5. In the military, a small unit sent out from the main group to do some particular task
  4. 7. To make worse
  5. 8. a storehouse for weapons
  6. 13. something that's left over, once the rest is used up
  7. 14. grow vigorously