character: Michael Pollan
topic: Soil Health and Its Importance in Agriculture
grade: 9
subject: Biology
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character: Dr. Elaine Ingham
topic: Microbial Communities in Soil
grade: 9
subject: Biology
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character: Wendell Berry
topic: Sustainable Farming Practices
grade: 9
subject: Biology
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character: Vandana Shiva
topic: Biodiversity in Agriculture
grade: 9
subject: Biology
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