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character: Montreal Protocol
topic: International Agreement to Protect Ozone Layer
grade: 11
subject: Chemistry
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character: Ozone Layer
topic: Importance and Role in Earth's Atmosphere
grade: 11
subject: Chemistry
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character: Chlorofluorocarbons (CFCs)
topic: Impact on Ozone Depletion
grade: 11
subject: Chemistry
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character: Global Warming Potential
topic: Relationship Between Ozone Layer and Climate Change
grade: 11
subject: Chemistry
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