character: David Smith
topic: Erosion Control Techniques in Urban Areas
grade: 9
subject: Geography
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character: Emily Johnson
topic: Impact of Urbanization on Soil Erosion
grade: 9
subject: Geography
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character: Carlos Ramirez
topic: Stormwater Management and Erosion Prevention
grade: 9
subject: Geography
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character: Sarah Lee
topic: Green Infrastructure for Erosion Control
grade: 9
subject: Geography
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