character: Mr. John Thompson
topic: Chemical Reactions in Air Pollution
grade: 9
subject: Chemistry
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character: Ms. Sarah Lee
topic: Effects of Air Pollutants on Human Health
grade: 9
subject: Chemistry
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character: Dr. Emily Carter
topic: Ozone Formation and its Impact on Climate
grade: 9
subject: Chemistry
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character: Mr. David Kim
topic: Role of Catalysts in Air Quality Improvement
grade: 9
subject: Chemistry
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