character: Professor John Smith
topic: Water Pollutants and Ecosystem Health
grade: 11
subject: Chemistry
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character: Dr. Emily Johnson
topic: Impact of Heavy Metals on Aquatic Life
grade: 11
subject: Chemistry
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character: Ms. Laura Green
topic: Nutrient Runoff and Algal Blooms
grade: 11
subject: Chemistry
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character: Mr. David Chen
topic: Effects of Industrial Waste on Water Quality
grade: 11
subject: Chemistry
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