character: Dr. Green Leaf
topic: Impact of Plant Roots on Soil Stability
grade: 9
subject: Geography
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character: Soil Scientist Sam
topic: The Role of Vegetation in Preventing Erosion
grade: 9
subject: Geography
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character: Professor Earth
topic: How Roots Help Retain Soil Moisture
grade: 9
subject: Geography
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character: Eco Expert Ella
topic: Plant Diversity and Its Effect on Soil Health
grade: 9
subject: Geography
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