character: Dr. Robert White
topic: Role of Ice Shelves in Ocean Circulation
subject: Geography
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character: Dr. Emily Johnson
topic: Impact of Melting Ice on Global Sea Levels
subject: Geography
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character: Dr. Sarah Thompson
topic: Climate Change and Ocean Currents
subject: Geography
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character: Dr. Mark Simmons
topic: The Importance of Polar Regions in Earth's Climate System
subject: Geography
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