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A soil is formed when decomposed organic material is encompassed into weathered mineral material at the earth’s surface. The climate, the organisms living in the soil, the type of parent material, the local topography, and the amount of time the soil has been developing all influence the resulting soil characteristics. Changes in the soil arise from the main processes of soil formation: addition, removal, transfer, and transformation of parts of the soil.
Salem Press Encyclopedia of Science, 2019. 5p.
