character: Ms. Taylor
topic: Food Chains and Toxicity in Aquatic Environments
grade: 9
subject: Chemistry
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character: Mr. Johnson
topic: Impact of Pollution on Aquatic Ecosystems
grade: 9
subject: Chemistry
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character: Dr. Martinez
topic: Bioaccumulation in Aquatic Food Chains
grade: 9
subject: Chemistry
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character: Mrs. Lee
topic: Chemical Toxicity and its Effects on Marine Life
grade: 9
subject: Chemistry
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