A. be very reactive and will attack ozone
B. be non-reactive and will not attack ozone
C. not change the level of ozone in the atmosphere
D. increase the level of ozone in the atmosphere
Correct Answer:
Option A – be very reactive and will attack ozone
Explanation
CFCs (Chlorofluorocarbons) have a lifetime in the atmosphere of about 20 to 100 years, and consequently one free chlorine atom from a CFC molecule can do a lot of damage, destroying ozone molecules for a long time
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