character: Dr. Michael Adams
topic: Impact of Organic Matter on Soil Fertility
grade: 12
subject: Chemistry
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character: Dr. Jane Smith
topic: Role of Soil Microorganisms in Nutrient Availability
grade: 12
subject: Chemistry
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character: Professor Emily Chen
topic: Chemical Composition of Organic Matter in Soil
grade: 12
subject: Chemistry
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character: Dr. Robert Johnson
topic: Effects of Organic Amendments on Crop Yield
grade: 12
subject: Chemistry
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