Earth Day

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Across
  1. 3. useful
  2. 4. man-made
  3. 5. massive
  4. 10. environmentalist
  5. 11. chemicals
  6. 12. litter
Down
  1. 1. reusable
  2. 2. plankton
  3. 6. turtle
  4. 7. harmful
  5. 8. reduce
  6. 9. harmless