character: Dr. Emily Chen
topic: Impact of Water Salinity on Aquatic Species
subject: Geography
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character: Dr. John Smith
topic: Effects of Ocean Acidification on Marine Life
subject: Geography
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character: Prof. Sarah Lee
topic: The Relationship Between Water Temperature and Aquatic Biodiversity
subject: Geography
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character: Dr. Mark Robinson
topic: Influence of Pollution on Freshwater Ecosystems
subject: Geography
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