character: Dr. Emily Stone
topic: Soil Composition and Properties
grade: 9
subject: Geography
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character: Professor John Green
topic: Soil Types and Their Characteristics
grade: 9
subject: Geography
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character: Dr. Sarah White
topic: The Importance of Soil in Ecosystems
grade: 9
subject: Geography
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character: Ms. Lisa Brown
topic: Soil Conservation Techniques
grade: 9
subject: Geography
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