character: Dr. John Smith
topic: Impact of Soil Erosion on Agricultural Productivity
grade: 9
subject: Geography
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character: Dr. Angela White
topic: Soil Conservation Techniques
grade: 9
subject: Geography
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character: Professor Mark Brown
topic: The Role of Soil in Sustainable Farming
grade: 9
subject: Geography
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character: Dr. Emily Green
topic: Climate Change and Its Effects on Soil Health
grade: 9
subject: Geography
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