Crossword puzzle jackson 13

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Across
  1. 1. liquids that harm nature
  2. 6. to clear a forest
  3. 7. able to be reused
  4. 8. risk of extinction
Down
  1. 2. fresh
  2. 3. able to be maintained or supportive to nature
  3. 4. keeping the nature safe
  4. 5. protection and restoration of the environment