character: Professor John Smith
topic: Impact of Environmental Change on Aquatic Ecosystems
grade: 11
subject: Geography
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character: Dr. Emily Liu
topic: Effects of Pollution on Marine Life
grade: 11
subject: Geography
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character: Mr. David Walker
topic: Climate Change and Freshwater Habitats
grade: 11
subject: Geography
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character: Ms. Sarah Johnson
topic: Strategies for Aquatic Ecosystem Conservation
grade: 11
subject: Geography
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