character: Dr. Smith
topic: Chemistry of Water Pollution and Heavy Metals
grade: 11
subject: Chemistry
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character: Dr. Johnson
topic: Effects of Heavy Metals on Aquatic Life
grade: 11
subject: Chemistry
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character: Ms. Lee
topic: Chemical Processes in Water Treatment
grade: 11
subject: Chemistry
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character: Mr. Adams
topic: Sources of Water Pollution and Mitigation Strategies
grade: 11
subject: Chemistry
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