character: Professor John Smith
topic: Water Quality and the Role of Fertilizers
grade: 9
subject: Chemistry
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character: Ms. Jane Doe
topic: Impact of Nutrient Runoff on Aquatic Ecosystems
grade: 9
subject: Chemistry
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character: Dr. Emily White
topic: Chemical Composition of Common Fertilizers
grade: 9
subject: Chemistry
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character: Mr. Alan Green
topic: Environmental Effects of Over-fertilization
grade: 9
subject: Chemistry
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