What does the chlorine released from CFCs and HCFCs do in the stratosphere?

What does the chlorine released from CFCs

Multiple choice — select the best answer

AForms breathable oxygen
BDestroys ozone molecules
CHas no effect
DIncreases ozone

✓ Correct answer: B. Destroys ozone molecules Once chlorine reaches the stratosphere, a single chlorine atom can destroy many ozone molecules in a repeating catalytic cycle, thinning the ozone layer that shields the Earth from ultraviolet radiation.

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What does the chlorine released from CFCs and HCFCs do in the stratosphere?

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