character: Prof. Linda Johnson
topic: Sediment Transport and Its Role in River Ecosystems
grade: 12
subject: Biology
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character: Dr. Emily Carter
topic: Impact of Erosion on River Biodiversity
grade: 12
subject: Biology
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character: Mr. Tom Anderson
topic: The Nutrient Cycle in Freshwater Ecosystems
grade: 12
subject: Biology
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character: Ms. Sarah Lee
topic: Effects of Pollution on River Sediment Composition
grade: 12
subject: Biology
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