character: Mr. Thompson
topic: Chemical Pollutants and Their Effects on Marine Food Chains
grade: 11
subject: Chemistry
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character: Dr. Johnson
topic: Impact of Heavy Metals on Aquatic Ecosystems
grade: 11
subject: Chemistry
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character: Ms. Carter
topic: Bioaccumulation and Biomagnification in Marine Species
grade: 11
subject: Chemistry
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character: Professor Lee
topic: The Role of Ocean Currents in Distributing Pollutants
grade: 11
subject: Chemistry
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