character: Professor Mark Johnson
topic: Natural Barriers: Dunes and Their Role in Coastal Protection
subject: Geography
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character: Dr. Emily Carter
topic: Impact of Coastal Erosion on Marine Ecosystems
subject: Geography
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character: Professor Sarah Lee
topic: The Importance of Wetlands in Coastal Defense
subject: Geography
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character: Mr. David Smith
topic: Understanding Coastal Geography: Protection Strategies
subject: Geography
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