The water evaporates and the salts are left behind, creating a white crustal layer that prevents air and water from reaching the underlying soil.
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Related: underlying
Prev: He complains that the underlying approach is top-down and involves the government dictating the rules.
Next: The explanation may be in Earth's mantle, the layer of rock underlying the tectonic plates and extending down over 1,800 miles to the outer edge of Earth's iron core.
