character: Dr. Emily Wong
topic: Impact of Water Quality on Aquatic Ecosystems
grade: 12
subject: Geography
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character: Dr. John Smith
topic: Effects of Pollution on Marine Life
grade: 12
subject: Geography
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character: Ms. Sarah Johnson
topic: Freshwater Ecosystem Health and Conservation
grade: 12
subject: Geography
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character: Prof. Alan Chen
topic: Climate Change and Its Influence on Aquatic Biodiversity
grade: 12
subject: Geography
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