character: Ms. Chen
topic: Nutrient recycling in closed aquatic systems
grade: 10
subject: Biology
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character: Mr. Hargrove
topic: Photosynthesis and its role in aquatic ecosystems
grade: 10
subject: Biology
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character: Dr. Lee
topic: The nitrogen cycle in aquatic environments
grade: 10
subject: Biology
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character: Ms. Patel
topic: Impact of human activity on aquatic nutrient cycles
grade: 10
subject: Biology
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