Earth day

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Across
  1. 3. colour of the bin for plastic
  2. 6. what produces the most oxygen
  3. 7. what keeps different materials from each other
  4. 10. big wave
Down
  1. 1. things we can use several times
  2. 2. poisonous gas
  3. 4. generating less mess in our life
  4. 5. colour of the bin for glass
  5. 8. planet we live on
  6. 9. colour of the bin for paper