character: Dr. Jane Smith
topic: Role of Soil Microorganisms in Nutrient Availability
grade: 12
subject: Chemistry
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character: Dr. John Doe
topic: Impact of Soil pH on Nutrient Solubility
grade: 12
subject: Chemistry
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character: Prof. Emily Johnson
topic: Soil Organic Matter and its Importance in Agriculture
grade: 12
subject: Chemistry
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character: Dr. Alice Williams
topic: Microbial Processes in Soil Fertility
grade: 12
subject: Chemistry
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