character: Dr. Emily Carter
topic: Impact of Water Pollution on Ecosystems
grade: 12
subject: Chemistry
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character: Rachel Green
topic: Chemical Effects of Pollutants on Aquatic Life
grade: 12
subject: Chemistry
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character: Michael Thompson
topic: Biochemical Cycles Affected by Water Contaminants
grade: 12
subject: Chemistry
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character: Sarah Johnson
topic: Toxicology of Heavy Metals in Water Environments
grade: 12
subject: Chemistry
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