character: Dr. Lisa Green
topic: Soil Organic Matter and Nutrient Cycling
grade: 12
subject: Chemistry
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character: Professor John Smith
topic: Fundamentals of Soil Chemistry
grade: 12
subject: Chemistry
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character: Dr. Emily Turner
topic: Microbial Activity in Soil Nutrient Dynamics
grade: 12
subject: Chemistry
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character: Dr. Michael Adams
topic: Impact of Organic Matter on Soil Fertility
grade: 12
subject: Chemistry
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