character: Dr. Mark Reynolds
topic: Impact of Heavy Metals on Aquatic Life
grade: 12
subject: Chemistry
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character: Professor Lisa Tomlinson
topic: Heavy Metal Accumulation in Freshwater Ecosystems
grade: 12
subject: Chemistry
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character: Dr. Emily Hart
topic: Effects of Pollution on Marine Biodiversity
grade: 12
subject: Chemistry
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character: Research Scientist John Li
topic: Toxicity of Heavy Metals to Aquatic Organisms
grade: 12
subject: Chemistry
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