character: Sarah
topic: Global Agreements on Ozone Protection
grade: 11
subject: Chemistry
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character: Dr. Jane
topic: Impact of Ozone Layer Depletion on Climate
grade: 11
subject: Chemistry
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character: Mr. Thompson
topic: History of Environmental Treaties
grade: 11
subject: Chemistry
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character: Lisa
topic: Science Behind Ozone Depleting Substances
grade: 11
subject: Chemistry
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