Saving nature

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Across
  1. 1. forest
  2. 4. not many
  3. 6. a very big animal that is like a fish
  4. 8. take care of something
  5. 9. become bigger in number
  6. 10. the time after now
  7. 11. not dead
Down
  1. 2. it's our planet
  2. 3. to break something completely so that you can't use it again
  3. 5. in danger of dying out
  4. 7. to want something to happen in future
  5. 8. a large green place with no trees
  6. 12. a wild animal that looks like a big yellow cat with black spots