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Why must global cooperation continue even after CFCs are banned?
Answer & Solution
Correct answer: A.
1. CFC molecules already in the atmosphere persist for many decades.
2. Some substitutes (HCFCs, HFCs) also have ozone or greenhouse impacts.
3. Continued monitoring and adoption of safer alternatives are needed.
_Source: NCERT Class 10 Science, Ch 13 "Our Environment", §13.2.1_
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