character: Mr. Lee
topic: Sustainability in Water Resource Management
grade: 11
subject: Chemistry
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character: Dr. Smith
topic: The Chemistry of Water Purification
grade: 11
subject: Chemistry
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character: Ms. Green
topic: Impact of Pollution on Aquatic Ecosystems
grade: 11
subject: Chemistry
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character: Mr. Johnson
topic: Renewable Resources in Water Treatment
grade: 11
subject: Chemistry
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