character: Professor John Smith
topic: Soil Degradation and Its Effects on Crop Yields
subject: Geography
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character: Dr. Emily Johnson
topic: Impact of Soil Quality on Agricultural Productivity
subject: Geography
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character: Ms. Angela Brown
topic: Sustainable Farming Practices to Combat Soil Erosion
subject: Geography
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character: Mr. David Lee
topic: Climate Change and Its Influence on Soil Health
subject: Geography
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