character: Dr. Sarah Thompson
topic: The Role of Nutrients in Soil Fertility
grade: 12
subject: Chemistry
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character: Dr. Emily Liu
topic: Chemical Processes in Soil Enrichment
grade: 12
subject: Chemistry
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character: Prof. John Carter
topic: Impact of Nitrogen on Plant Growth
grade: 12
subject: Chemistry
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character: Dr. Maria Gonzalez
topic: Soil pH and Its Influence on Nutrient Availability
grade: 12
subject: Chemistry
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