Atmosphere

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Across
  1. 5. the production of O3
  2. 9. where the ozone is found
  3. 10. the source of all clouds
  4. 11. a layer of gases that surrounds the earth
  5. 12. nitrogen oxygen argon and carbon dioxide
  6. 15. when trees take oxygen and release carbon dioxide
Down
  1. 1. water vapor dust and ozone
  2. 2. Hottest layer
  3. 3. when chlorine attacks ozone and destroys it
  4. 4. airborne particles that are dangerous to organisms
  5. 6. the noxious mixture of gases
  6. 7. bottom layer
  7. 8. when bacteria fix nitrogen so it can be used
  8. 13. natural occurring phenomenon
  9. 14. absorbs UV radiation