The greatest loss of stratospheric ozone ____________.
A)occurred after the Montreal Protocol failed to be ratified
B)is expected to occur in the mid-21st century
C)occurs in urban areas where automobile use is most prevalent
D)has occurred over Antarctica

Question

Quizplus · Accepted Answer

The greatest loss of stratospheric ozone has occurred over Antarctica, known as the ozone hole, due to the presence of ozone-depleting substances such as chlorofluorocarbons (CFCs) and halons. The Montreal Protocol, which restricted the production of these substances, has resulted in a decrease in the size of the ozone hole in recent years.

The Greatest Loss of Stratospheric Ozone ____________