enviromental crossword

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Across
  1. 4. farming
  2. 8. not human creations
  3. 9. breath in
Down
  1. 1. gas a type of gas
  2. 2. waste
  3. 3. underground
  4. 5. use again
  5. 6. liquid
  6. 7. soil material
  7. 10. world