character: Professor John Smith
topic: Impact of Soil pH on Plant Growth
grade: 12
subject: Chemistry
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character: Dr. Emily Johnson
topic: Role of Nutrients in Soil and Their Effects on Plant Health
grade: 12
subject: Chemistry
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character: Mr. Alan Brown
topic: Understanding Soil Composition and Its Impact on Agricultural Practices
grade: 12
subject: Chemistry
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character: Ms. Sara Lee
topic: The Chemistry of Soil Amendments and Their Role in Plant Growth
grade: 12
subject: Chemistry
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