character: Dr. Alan Green
topic: Impact of Land Use on Soil Erosion and Fertility
grade: 9
subject: Geography
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character: Dr. Maria Gonzalez
topic: Sustainable Agriculture and Soil Conservation
grade: 9
subject: Geography
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character: Prof. John Smith
topic: Effects of Urban Development on Soil Quality
grade: 9
subject: Geography
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character: Dr. Lisa Chen
topic: Climate Change and Its Effects on Erosion Patterns
grade: 9
subject: Geography
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