character: Dr. Jane Smith
topic: Ecologist specializing in nutrient cycling
grade: 10
subject: Biology
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character: Professor Tom Johnson
topic: Aquatic food webs and their dynamics
grade: 10
subject: Biology
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character: Sarah Lee
topic: Impact of nutrient pollution on aquatic ecosystems
grade: 10
subject: Biology
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character: Mark Chen
topic: Nutrient cycling and its role in biodiversity
grade: 10
subject: Biology
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