character: Dr. Jane Smith
topic: Particulate Matter and Its Effect on Human Health
grade: 9
subject: Chemistry
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character: Professor Mark Johnson
topic: Combustion Emissions and Environmental Impact
grade: 9
subject: Chemistry
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character: Ms. Emily Turner
topic: Respiratory Health: Understanding the Risks of Smoke and Pollution
grade: 9
subject: Chemistry
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character: Mr. David Lee
topic: Chemical Reactions in Combustion and Their Byproducts
grade: 9
subject: Chemistry
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