earth day crossword

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Across
  1. 3. turning trash into something else that's useful
  2. 6. to use something again
  3. 7. produces oxygen
  4. 8. another word for garbage
Down
  1. 1. use the sun instead of electricity
  2. 2. what we breath
  3. 4. a type of soil made from food waste
  4. 5. April 22nd