character: Mr. Alex Carter
topic: Human Influence on Atmospheric Composition
grade: 11
subject: Chemistry
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character: Dr. Emily Nguyen
topic: Effects of Industrialization on Air Quality
grade: 11
subject: Chemistry
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character: Ms. Sarah Johnson
topic: Global Warming and Greenhouse Gas Emissions
grade: 11
subject: Chemistry
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character: Mr. David Lee
topic: The Role of Transportation in Air Pollution
grade: 11
subject: Chemistry
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