character: Dr. Michael Stevens
topic: River Valleys and Their Formation Processes
grade: 9
subject: Geography
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character: Dr. Emily Carter
topic: Erosion and River Valley Development
grade: 9
subject: Geography
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character: Professor Sarah Mitchell
topic: Geological Features of River Valleys
grade: 9
subject: Geography
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character: Mr. John Anderson
topic: Impact of Rivers on Landforms
grade: 9
subject: Geography
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