character: Dr. Green
topic: Advanced Oxidation Processes for Water Purification
grade: 11
subject: Chemistry
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character: Professor Blue
topic: Chemical Reactions in Water Treatment
grade: 11
subject: Chemistry
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character: Ms. White
topic: Understanding Water Contaminants
grade: 11
subject: Chemistry
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character: Mr. Smith
topic: Environmental Impacts of Water Pollution
grade: 11
subject: Chemistry
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