character: Ms. Emily Johnson
topic: Soil Chemistry and Its Impact on Plant Development
grade: 12
subject: Chemistry
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character: Dr. Sarah Thompson
topic: The Role of Nutrients in Soil Ecology
grade: 12
subject: Chemistry
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character: Mr. David Lee
topic: Chemical Reactions in Soil and Their Effects on Agriculture
grade: 12
subject: Chemistry
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character: Ms. Rachel Green
topic: Environmental Factors Influencing Soil pH and Plant Growth
grade: 12
subject: Chemistry
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