How does the long lifespan of CFC molecules affect the rate

Subject : Biology

Question:

How does the long lifespan of CFC molecules affect the rate of repair of the ozone layer?

Expert Verified Solution:

The long lifespan of chlorofluorocarbons (CFCs) significantly affects the rate of repair of the ozone layer. CFC molecules can remain in the atmosphere for several decades, during which they slowly drift into the stratosphere. Once there, UV radiation breaks them down, releasing chlorine atoms that catalytically destroy ozone molecules. This process contributes to the depletion of the ozone layer. As a result, the repair of the ozone layer is slowed because the persistent presence of CFCs continues to damage ozone molecules faster than they can be naturally replenished. Efforts to reduce CFC emissions through international agreements like the Montreal Protocol aim to mitigate this impact and accelerate the recovery of the ozone layer.