Environment

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Across
  1. 4. emit ... gases
  2. 7. ... fumes
  3. 9. ... sources of energy
Down
  1. 1. dump...
  2. 2. noise ...
  3. 3. the large-scale removal of trees from forests
  4. 5. ... species
  5. 6. ... fuels
  6. 8. global ...