Unit 5

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Across
  1. 3. flourishing, successful (adj)
  2. 4. very necessary, very important (adj)
  3. 6. the action of conserving nature (n)
  4. 8. throw away rubbish in a careless way (v)
  5. 9. a different choice, a different option (n)
  6. 10. something very valuable (n)
  7. 11. decrease, become smaller (v)
  8. 12. unusable or unwanted material, rubbish (n)
  9. 13. a place that humans have not touched (adj)
Down
  1. 1. leave behind (v)
  2. 2. the influence or effect of something (n)
  3. 4. alive, exiting (adj)
  4. 5. the action of building of something (n)
  5. 7. a long and dangerous hike (v)
  6. 8. needing to get out of a bad situation (adj)
  7. 9. goal, target (n)