character: Dr. Jane Rivers
topic: Soil Nutrient Dynamics
grade: 11
subject: Chemistry
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character: Professor Mark Thompson
topic: Chemical Properties of Soil
grade: 11
subject: Chemistry
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character: Researcher Emily Chen
topic: Impact of pH on Soil Nutrients
grade: 11
subject: Chemistry
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character: Scientist David Brooks
topic: Soil Fertility and Crop Yield
grade: 11
subject: Chemistry
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