character: Dr. Jane Smith
topic: Soil Chemistry and Microbial Activity
grade: 11
subject: Chemistry
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character: Dr. John Doe
topic: Nutrient Cycling in Ecosystems
grade: 11
subject: Chemistry
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character: Professor Emily Brown
topic: Impact of pH on Soil Microbial Communities
grade: 11
subject: Chemistry
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character: Dr. Michael Green
topic: Soil Health and Plant Growth
grade: 11
subject: Chemistry
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