Back to Earth School How much do you know about winning politics and policy? Question 1/5 Chlorofluorocarbons (CFCs) are the chemicals responsible for thinning the ozone layer. What is notable about the Montreal Protocol, which asked for the rapid phasing out of CFCs? a It was ratified by every country on earth b It was the most expensive treaty in history. c It required no action by the participating countries.` d It is still pending 35 years later. Submit
