Soil

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Loess field in Germany
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Loess field in Germany
Soil horizons are caused by combined biological, chemical and physical effects
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Soil horizons are caused by combined biological, chemical and physical effects
Motorcycle rider digging into soil
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Motorcycle rider digging into soil

Soil (sometimes called dirt) is the combination of rock, mineral fragments (pieces) made by weathering (wind, rain, sun, snow, etc.), and organic matter (living things), water, and air.

Soil, especially topsoil, is the portion of the Earth's crust where plants can grow.