Under the Montreal Protocol, CFCs have mostly been replaced by what chemical?
A)methane
B)HFCs
C)fluorine
D)carbon dioxide

Question

Quizplus · Accepted Answer

CFCs have mostly been replaced by HFCs (hydrofluorocarbons) under the Montreal Protocol, which is an international treaty designed to protect the ozone layer by phasing out the production and consumption of ozone-depleting substances. Methane, fluorine, and carbon dioxide are not replacements for CFCs, and in fact, carbon dioxide is also a greenhouse gas that contributes to climate change.

Under the Montreal Protocol, CFCs Have Mostly Been Replaced by What