character: Ms. Sarah Thompson
topic: Nutrient Cycling in Freshwater Ecosystems
grade: 12
subject: Chemistry
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character: Dr. James Carter
topic: Freshwater Ecosystem Dynamics
grade: 12
subject: Chemistry
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character: Mr. Alan Richard
topic: Chemical Composition of Aquatic Habitats
grade: 12
subject: Chemistry
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character: Ms. Emily Foster
topic: Impact of Nutrient Runoff on Freshwater Systems
grade: 12
subject: Chemistry
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