character: Dr. Sarah Thompson
topic: Understanding Soil Composition and Fertility
grade: 11
subject: Chemistry
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character: Mr. John Miller
topic: The Role of pH in Soil Fertility
grade: 11
subject: Chemistry
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character: Ms. Emily Rivera
topic: Nutrient Cycling in Ecosystems
grade: 11
subject: Chemistry
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character: Dr. Alice Green
topic: Impact of Soil Composition on Plant Growth
grade: 11
subject: Chemistry
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