What were CFCs replaced with?

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4. What chlorofluorocarbons do?
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Tags

1. #hydrofluorocarbons
2. #extent
3. #replace
4. #potential
5. #hcfcs
6. #unlike
7. #lesser
8. #ozone
9. #hydrochlorofluorocarbons
10. #interim
11. #replacements
12. #deplete
13. #depletion
14. #stratospheric
15. #which
16. #ultimately