How are CFCs harmful?

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Tags

  1. #lower
  2. #halons
  3. #ozone
  4. #which
  5. #global
  6. #climate
  7. #chlorofluorocarbons
  8. #generated
  9. #protective
  10. #ultraviolet
  11. #hydrochlorofluorocarbons
  12. #changing
  13. #harmful
  14. #hcfcs
  15. #atmosphere
  16. #earth
  17. #layer
  18. #destroy
  19. #shields