POLLUTION/ENVIRONMENT

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Across
  1. 4. a substance used in industry or cleaning
  2. 6. causing great harm or damage
  3. 8. cutting down large areas of trees
  4. 10. a sudden event that causes lots of damage
  5. 12. too many vehicles causing traffic jams
  6. 14. the layer of gases surrounding the Earth
  7. 15. a breathing problem often made worse by pollution
  8. 16. the variety of plants and animals in an area
  9. 17. the result of an action
  10. 19. change long-term changes in global temperature
Down
  1. 1. to influence something
  2. 2. rain rain that contains harmful chemicals
  3. 3. monoxide a dangerous gas produced by engines
  4. 5. pollution dirty air caused by smoke and gases
  5. 7. the ___ of rivers makes the water unsafe
  6. 8. tiny dry particles floating in the air
  7. 9. material that can break down naturally
  8. 11. the release of gas or smoke into the air
  9. 13. dioxide the gas released when humans breathe out
  10. 18. a community of living things and their environment