The depletion of the ozone layer in the upper atmosphere has been strongly linked to the release of which class of chemicals?

Explanation

Ozone layer depletion has been strongly linked to chlorofluorocarbons, or CFCs, chemicals once widely used in refrigerants, air conditioners, and aerosol sprays, which release chlorine atoms upon breaking down in the upper atmosphere that then catalytically destroy ozone molecules. This thinning of the protective ozone layer allows more harmful ultraviolet radiation from the sun to reach Earth’s surface. The 1987 Montreal Protocol, an international agreement to phase out CFC production, has been widely credited with helping the ozone layer gradually recover. Explore more Everyday Science MCQs on mcqstutor to keep practicing.