character: Mr. James Carter
topic: The Importance of Bacteria in Soil Health
grade: 9
subject: Science
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character: Mrs. Linda Davis
topic: Microorganisms and Ecosystem Balance
grade: 9
subject: Science
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character: Dr. Sarah Monroe
topic: Nutrient Cycling in Agricultural Soils
grade: 9
subject: Science
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character: Professor Alan Chen
topic: The Role of Soil Microbes in Plant Growth
grade: 9
subject: Science
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