character: Dr. Andrea T. O'Donnell
topic: Soil Chemistry and Plant Phenotypes
grade: 12
subject: Chemistry
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character: Professor Emily R. Hayes
topic: Plant Nutrient Uptake
grade: 12
subject: Chemistry
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character: Dr. Michael S. Thompson
topic: Soil pH and Crop Yield
grade: 12
subject: Chemistry
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character: Dr. Linda A. Green
topic: Effects of Soil Composition on Plant Health
grade: 12
subject: Chemistry
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