character: Professor Mark Chen
topic: Fish Adaptations to Salinity Changes
subject: Geography
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character: Dr. Emily Wang
topic: Impact of Climate Change on Aquatic Ecosystems
subject: Geography
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character: Professor Sarah Johnson
topic: Freshwater and Saltwater Fish Behavior
subject: Geography
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character: Dr. David Lee
topic: Marine Life Adaptations in Varying Salinity Levels
subject: Geography
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