character: Dr. Emily Foster
topic: Soil Scientist, Impact of Soil pH on Nutrient Availability
grade: 12
subject: Chemistry
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character: Professor Alan Carter
topic: Soil Chemistry and Nutrient Cycling
grade: 12
subject: Chemistry
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character: Dr. Maria Nguyen
topic: Effects of Soil pH on Plant Growth
grade: 12
subject: Chemistry
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character: Dr. Henry Black
topic: The Role of Soil Microorganisms in Nutrient Availability
grade: 12
subject: Chemistry
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