AP Environmental Science Quiz
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A country phases out CFCs but ozone recovers slowly; which explanation best fits and supports continued controls?
A
Ozone recovers slowly because CFCs and halons are long-lived; continued recovery depends on sustained low emissions and proper management of existing banks.
B
Ozone recovers slowly because ozone is produced only by factories, so banning CFCs reduces ozone production.
C
Ozone recovers slowly because UV radiation has permanently stopped, so ozone can no longer form in the stratosphere.
D
Ozone recovers slowly because oxygen levels are too high, preventing ozone molecules from forming efficiently.
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