character: Ms. Sarah White
topic: Plant Roots and Their Role in Soil Stability
grade: 9
subject: Geography
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character: Mr. John Green
topic: Soil Composition and Erosion Prevention
grade: 9
subject: Geography
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character: Dr. Emily Brown
topic: Impact of Vegetation on Soil Health
grade: 9
subject: Geography
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character: Ms. Laura Nelson
topic: The Biological Factors of Soil Conservation
grade: 9
subject: Geography
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