character: Professor Emily Brown
topic: Impact of pH on Soil Microbial Communities
grade: 11
subject: Chemistry
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character: Dr. Sarah Johnson
topic: Effects of Soil Composition on Microbial Diversity
grade: 11
subject: Chemistry
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character: Mr. James Smith
topic: Chemical Properties of Soil and Their Influence on Agriculture
grade: 11
subject: Chemistry
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character: Ms. Rachel Green
topic: Role of Microbes in Soil Health and Fertility
grade: 11
subject: Chemistry
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