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Humus is physically characterized as a dark, crumbly organic substance.
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Updated 2026-10-06
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Home Composting Fundamentals for Backyard Gardeners @ University of Michigan - Ann Arbor
Ch.1 Biological Foundations - Home Composting Fundamentals for Backyard Gardeners @ University of Michigan - Ann Arbor
Fundamentals of Biological Decomposition - Home Composting Fundamentals for Backyard Gardeners @ University of Michigan - Ann Arbor