Earth Day

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Across
  1. 2. to use again
  2. 5. contamination
  3. 7. opposite of dirty
  4. 9. large bodies of water
  5. 10. trees,shrubs,flowers,etc.
  6. 11. a liquid substance that sustains life
  7. 12. to keep in current condition
Down
  1. 1. to make smaller
  2. 3. the study of how one thing interacts with other things
  3. 4. a big round object circling a sun
  4. 6. trash not in trash can
  5. 8. convert waste into usable materials