Environmental issues

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Across
  1. 1. people that have to leave their homes because of global warming
  2. 5. the action of clearing forests
  3. 9. environmental contamination with man-made waste
Down
  1. 2. ... gas or effect
  2. 3. the planet's lungs
  3. 4. carbon...
  4. 6. water that submerges land
  5. 7. a prolonged period of dryness
  6. 8. the phenomenon of combustion