character: Prof. Emily Chen
topic: Soil Composition and Its Role in Agriculture
grade: 12
subject: Chemistry
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character: Dr. Michael Smith
topic: The Chemical Properties of Soil and Plant Growth
grade: 12
subject: Chemistry
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character: Ms. Sarah Lopez
topic: Nutrient Cycling in Agricultural Soils
grade: 12
subject: Chemistry
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character: Mr. James Turner
topic: Impact of Soil pH on Crop Yields
grade: 12
subject: Chemistry
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