character: Dr. Lisa Wong
topic: Effects of Land Use on Soil Erosion
grade: 9
subject: Geography
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character: Dr. Alan Chen
topic: Impact of Urban Development on Natural Landscapes
grade: 9
subject: Geography
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character: Ms. Sarah Johnson
topic: Sustainable Agricultural Practices and Soil Conservation
grade: 9
subject: Geography
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character: Mr. David Miller
topic: Erosion Control Techniques in Different Land Use Scenarios
grade: 9
subject: Geography
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