nature protection

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Across
  1. 3. the name of our planet
  2. 4. dying out
  3. 8. biological term to differ animals or plants
  4. 10. possible danger
  5. 11. make something dirty
  6. 12. rare and possible to die out
  7. 14. the place and conditions animals or plants live in.
Down
  1. 1. the act of breaking law
  2. 2. the largest animal in the world
  3. 5. the process of selling and buying goods
  4. 6. start up smth.
  5. 7. against the law
  6. 9. take actions to keep smth/smb safe
  7. 13. voluntary giving money for smth.