character: Dr. Emily Johnson
topic: Role of Nutrients in Soil and Their Effects on Plant Health
grade: 12
subject: Chemistry
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character: Professor Mark Adams
topic: Chemical Composition of Soil and Its Impact on Agriculture
grade: 12
subject: Chemistry
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character: Dr. Sarah Lee
topic: Microbial Interactions in Soil and Nutrient Cycling
grade: 12
subject: Chemistry
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character: Dr. James Carter
topic: Plant Nutrient Uptake Mechanisms and Soil Fertility
grade: 12
subject: Chemistry
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