character: Dr. Emily Carter
topic: Impact of Climate on Erosion and Sediment Flow in Arid Zones
subject: Geography
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character: Dr. John Smith
topic: Desertification and Soil Erosion Processes
subject: Geography
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character: Prof. Lisa Huang
topic: Hydrological Changes in Arid Regions
subject: Geography
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character: Dr. Mark Johnson
topic: Climate Change Effects on Coastal Erosion
subject: Geography
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