Parent rock - The rock from which a soil is made, Weathering - The breakdown of rocks, Erosion - The movement of rock fragments , Alluvial - Formed from water carrying materials, Loess - Soil formed from winds, Boulder clays - Formed from glaciers, Topsoil - Uppermost layer of soil, Subsoil - Layer below the cultivated layer, Sedentary - Soil formed without movement,

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