character: Mr. John Lee
topic: Nutrient Availability and Soil Chemistry
grade: 11
subject: Chemistry
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character: Dr. Sarah Kim
topic: Impact of pH on Soil Nutrients
grade: 11
subject: Chemistry
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character: Ms. Emma White
topic: Essential Nutrients for Plant Growth
grade: 11
subject: Chemistry
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character: Mr. David Brown
topic: Soil Composition and Its Effects on Agriculture
grade: 11
subject: Chemistry
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