Why is even a small amount of CFCs reaching the stratosphere so damaging to the ozone layer?

CFCs are heavier than ozone and push it down to the groundCorrect answerYour answerCFCs absorb all the ultraviolet light before ozone canCorrect answerYour answerEach chlorine atom released acts as a catalyst and can destroy thousands of ozone moleculesCorrect answerYour answerCFCs burn in the stratosphereCorrect answerYour answer

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CorrectNot quiteAnswer C

Correct answer: C

Ultraviolet light breaks CFC molecules apart and frees chlorine atoms.
A chlorine atom breaks an ozone molecule, is released again, and repeats the cycle many thousands of times before it is removed.

Concept: How CFCs destroy ozone
Typical timeTypical: 90 s
Your timeYours: —

The rule this testsOzone layer and greenhouse effect

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Why is even a small amount of CFCs reaching the stratosphere so damaging to the ozone layer?

Explanation