Soil
Soil is a mix of tiny bits of broken rock, the rotted remains of plants and animals, water and air. Soils are not all alike: water soaks quickly through sand and gravel, which have big gaps between their bits, but slowly through sticky clay, whose bits are tiny and packed close.
Depth 1 · Foundation
You know what soil is made of and that water soaks through gravel and sand faster than through clay.
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- 1
Foundation
You know what soil is made of and that water soaks through gravel and sand faster than through clay.
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