character: Mr. Alan Brown
topic: Bioaccumulation of Heavy Metals in Freshwater Species
grade: 12
subject: Chemistry
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character: Dr. Emily Carter
topic: The Impact of Heavy Metals on Marine Ecosystems
grade: 12
subject: Chemistry
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character: Prof. John Smith
topic: Toxicology of Heavy Metals in Aquatic Life
grade: 12
subject: Chemistry
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character: Ms. Sarah Lee
topic: Freshwater Ecosystems and Contaminant Dynamics
grade: 12
subject: Chemistry
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