character: Emily Chen
topic: Impact of pH on Soil Nutrients
grade: 11
subject: Chemistry
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character: Dr. Sarah Thompson
topic: Soil Chemistry and Nutrient Availability
grade: 11
subject: Chemistry
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character: Professor John Smith
topic: Effects of Soil pH on Crop Yield
grade: 11
subject: Chemistry
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character: Researcher Maria Gomez
topic: Soil pH and Its Role in Plant Nutrition
grade: 11
subject: Chemistry
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