Eli5: what exactly is clay? How is it different from regular dirt or loam?
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Clay is made of very small bits of mineral, which are made when rocks erode. The mineral particles in clay are much smaller than sand or silt, which is why clay can hold so much water: the water molecules stick in between tiny thin layers of clay molecules.
Loam is a soil that’s a mix of lots of different materials, including sand, silt, clay, and organic matter.
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