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Why is the concentration of ozone less o...

Why is the concentration of ozone less over the north and south poles?

A

CFCs accumulate only in area where the air is cold

B

CFC use is highest in these areas

C

CFCs stick to frozen water vapor and are able to act as catalysts

D

UV rays are stronger in the atmosphere

Text Solution

Verified by Experts

The correct Answer is:
C
The ozone hole result from ozone depleting chemical e.g. chlorofluorocarbon. When CFC are hit by ultraviolet light they release chlorine which reacts with ozone destroying it to produce chlorine monoxide and diatomic oxygen. These reactions are most effective when they occur on the surface of ice crystals in the stratosphere.
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