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The Montreal Protocol of 1987 was an international agreement to phase out:
AGreenhouse gases like CO2 and methane globally
BChlorofluorocarbons (CFCs) damaging the ozone layer
CSingle-use plastics in all participating nations
DNuclear weapons in all signatory member states
Answer & Solution
Correct answer: B. Chlorofluorocarbons (CFCs) damaging the ozone layer
The 1987 Montreal Protocol globally banned CFCs (chlorofluorocarbons) used in refrigerators and aerosols. It is widely considered the most successful environmental treaty. The ozone layer is now recovering.
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