vocab

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Across
  1. 3. caol and oil are
  2. 4. chemical fertilizer-free farming
  3. 6. waste water discharged from homes and factories
  4. 8. opposite of reusable
Down
  1. 1. planting trees
  2. 2. CO2 and methane are
  3. 5. synonym of dirty
  4. 7. release