character: Mr. David Lee
topic: Impact of Soil Degradation on Ecosystems
grade: 10
subject: Geography
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character: Ms. Sarah Johnson
topic: Consequences of Soil Erosion
grade: 10
subject: Geography
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character: Dr. Emily Roberts
topic: Soil Conservation Techniques
grade: 10
subject: Geography
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character: Mr. John Smith
topic: Effects of Deforestation on Soil Quality
grade: 10
subject: Geography
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