The hole in the ozone layer has been brought about by anthropogenic emissions of ____________.
A) carbon dioxide
B) methane
C) chlorofluorocarbons (CFCs)
D) polychlorinated biphenyls (PCBs)

Question

Quizplus · Accepted Answer

The hole in the ozone layer has been caused by the release of chlorofluorocarbons (CFCs) into the atmosphere, primarily used in refrigeration, aerosols, and foam production. These chemicals break down ozone molecules in the stratosphere and have been identified as the main cause of the depletion of the ozone layer. Carbon dioxide and methane are greenhouse gases responsible for climate change, while polychlorinated biphenyls (PCBs) are toxic chemicals used in manufacturing and electrical equipment.

The Hole in the Ozone Layer Has Been Brought About