character: Emma Carter
topic: Soil Health and Nutrient Management
grade: 9
subject: Biology
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character: John Perkins
topic: The Importance of Soil Microorganisms
grade: 9
subject: Biology
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character: Clara Williams
topic: Nutrient Cycling in Ecosystems
grade: 9
subject: Biology
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character: Michael Thompson
topic: Impact of Fertilizers on Soil Quality
grade: 9
subject: Biology
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