character: Mr. David Kim
topic: Methods to Reduce Air Pollution
grade: 9
subject: Chemistry
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character: Ms. Linda Hartley
topic: Impact of Industrial Activities on Air Quality
grade: 9
subject: Chemistry
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character: Dr. Alan Mitchell
topic: Renewable Energy Solutions for Cleaner Air
grade: 9
subject: Chemistry
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character: Professor Emily Zhao
topic: Chemical Reactions in Air Pollution and Its Mitigation
grade: 9
subject: Chemistry
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