ENVIRONMENT

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Across
  1. 1. we should........ paper, plastic, aluminium and glass
  2. 3. we must throw litter in it
  3. 5. make less
  4. 6. not negative
  5. 7. we must .......... the Earth
Down
  1. 2. we must protect it
  2. 4. another word for garbage
  3. 6. we must .......... trees