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character: Chlorofluorocarbons
topic: Impact on Ozone Layer
grade: 11
subject: Chemistry
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character: Ozone Depletion
topic: Consequences of CFC Emissions
grade: 11
subject: Chemistry
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character: Human Activities
topic: Sources of CFCs and Their Effects
grade: 11
subject: Chemistry
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character: Environmental Policy
topic: Regulations to Combat Ozone Layer Depletion
grade: 11
subject: Chemistry
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