character: Dr. Robert Smith
topic: Nutrient Cycling in Soil: A Chemical Perspective
grade: 12
subject: Chemistry
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character: Dr. Emily Johnson
topic: Chemical Properties of Soil Nutrients
grade: 12
subject: Chemistry
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character: Professor Alan Turner
topic: The Role of Microorganisms in Soil Chemistry
grade: 12
subject: Chemistry
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character: Ms. Jessica Lee
topic: Impact of pH on Soil Nutrient Availability
grade: 12
subject: Chemistry
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