Ozone in the stratosphere is depleted by

Subject : Environmental Sciences

Question:

Ozone in the stratosphere is depleted by ________.

A) Carbon Dioxide

B) Methane

C) Chlorofluorocarbons (CFCs)

D) Nitrogen

Expert Verified Solution: C) Chlorofluorocarbons (CFCs)

Description:
Ozone in the stratosphere is depleted by chlorofluorocarbons (CFCs). CFCs and other ozone-depleting substances release chlorine and bromine atoms in the stratosphere when they break down under ultraviolet (UV) radiation. These chlorine and bromine atoms then react with ozone (O₃) molecules, causing the ozone to break apart. This process leads to a reduction in the concentration of ozone in the stratosphere, contributing to the thinning of the ozone layer and the formation of the ozone hole.

Need Help?