character: John Perkins
topic: The Importance of Soil Microorganisms
grade: 9
subject: Biology
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character: Rachel Carson
topic: Environmental Impact of Soil Health
grade: 9
subject: Biology
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character: Charles Darwin
topic: The Role of Decomposition in Ecosystems
grade: 9
subject: Biology
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character: Lynn Margulis
topic: Symbiosis and Soil Microbiomes
grade: 9
subject: Biology
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