character: Professor John Smith
topic: Water Quality and the Role of Fertilizers
grade: 9
subject: Chemistry
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character: Dr. Emily Carter
topic: Impact of Nutrient Runoff on Aquatic Ecosystems
grade: 9
subject: Chemistry
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character: Mr. Adam Johnson
topic: The Chemistry of Eutrophication
grade: 9
subject: Chemistry
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character: Ms. Sarah Lee
topic: Sustainable Farming Practices to Improve Water Quality
grade: 9
subject: Chemistry
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