character: Professor Sam Drysdale
topic: Soil Structures and Composition
grade: 9
subject: Geography
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character: Dr. Emily Carson
topic: Types of Soil and Their Uses
grade: 9
subject: Geography
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character: Mr. Adam Reyes
topic: The Role of Soil in Agriculture
grade: 9
subject: Geography
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character: Ms. Fiona Liu
topic: Weathering and Soil Formation
grade: 9
subject: Geography
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