character: Chlorofluorocarbons (CFCs)
topic: Chemical Compounds Responsible for Ozone Depletion
grade: 11
subject: Chemistry
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character: Ozone Layer
topic: Effects of CFCs on Atmospheric Chemistry
grade: 11
subject: Chemistry
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character: Freon
topic: Alternatives to CFCs in Refrigeration and Air Conditioning
grade: 11
subject: Chemistry
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character: Montreal Protocol
topic: International Treaty for CFC Phasing Out
grade: 11
subject: Chemistry
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