Air around us

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Across
  1. 2. produce by factories
  2. 3. ........rain harm human life
  3. 5. burning of these pollute air
  4. 8. global warming causes
  5. 9. used for combustion
  6. 10. generate electricity
Down
  1. 1. air pollution affect our ........system
  2. 4. a green house gas
  3. 6. a natural resource
  4. 7. moving air