The Difference Between Sand, Silt, and Clay, Sand, Silt, and Clay Comprising the Majority of Soil, the Composition of Rich Black Agricultural Soil, and the Benefit of Worms for Agriculture

Soil is where geology and biology intersect. Sand is any mineral ground down into tiny grains by natural wear and tear. Silt is essentially sand but ground much finer. Clay is mineral crystals which are so tiny, they are only viewable through a microscope. These 3 components make up 40% - 50% of most soils. The rich black soil associated with farming is rotted plant matter and rotted living matter (eg. worms, fungi, broken down plants etc.). Worms are important because they plow and irrigate the...

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