Earth day

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Across
  1. 4. the boxes are mostly made of
  2. 6. Water
  3. 7. a lot of water
  4. 9. big wave of water
Down
  1. 1. colour of plastic bin
  2. 2. books are made of
  3. 3. pollution polluting the air
  4. 4. Carbon dioxide
  5. 5. deforming forest
  6. 8. windows are made of