Multiple choice

How are the CFC's responsible for the reduction of ozone layer?

  1. CFC's displace the ozone layer

  2. CFC's absorb the ozone gas

  3. CFC's react with the ozone gas

  4. CFC's cover the ozone layer
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

CFCs release chlorine atoms when exposed to UV radiation in the stratosphere. These chlorine atoms react with ozone (O3), breaking it down into O2. One chlorine atom can destroy thousands of ozone molecules through a chain reaction.

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