character: Professor Mark Davis
topic: Pollution and Chemical Reactions
grade: 11
subject: Chemistry
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character: Dr. Lisa Tran
topic: Impact of Industrial Waste on Air Quality
grade: 11
subject: Chemistry
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character: Ms. Sarah Johnson
topic: Chemical Reactions in Water Pollution
grade: 11
subject: Chemistry
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character: Mr. Brian Chen
topic: Green Chemistry Solutions to Reduce Pollution
grade: 11
subject: Chemistry
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