Question

How did CFCs result in the depletion of the Ozone layer?

• A. They prevented the formation of new Ozone atoms.
• B. They helped the formation of new Ozone atoms.
• C. They prevented the formation of new Chlorine atoms.
• D. They prevented the formation of new Oxygen atoms.

Answer 1

The correct option is A They prevented the formation of new Ozone atoms.

The Chlorine in CFCs react with single oxygen atoms preventing the formation of new ozone. This also breaks the existing ozone atoms and converts them back to oxygen, resulting in the depletion of the Ozone layer.