character: Mr. Brown
topic: Toxicology of Heavy Metals in Water Sources
grade: 11
subject: Chemistry
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character: Ms. Johnson
topic: Effects of Heavy Metals on Aquatic Life
grade: 11
subject: Chemistry
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character: Dr. Smith
topic: Methods for Testing Heavy Metals in Water
grade: 11
subject: Chemistry
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character: Mr. Lee
topic: Health Implications of Heavy Metals in Drinking Water
grade: 11
subject: Chemistry
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