character: Ms. Emily Foster
topic: Impact of Nutrient Runoff on Freshwater Systems
grade: 12
subject: Chemistry
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character: Dr. John Ramirez
topic: Effects of Eutrophication on Aquatic Life
grade: 12
subject: Chemistry
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character: Professor Sarah Lee
topic: Chemical Properties of Water in Contaminated Ecosystems
grade: 12
subject: Chemistry
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character: Mr. Alex Chen
topic: Water Quality Assessment and Pollution Sources
grade: 12
subject: Chemistry
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