Soil Systems

This document discusses soils and soil formation. It describes soils as being made up of mineral particles, organic remains, water, and air. Soils can be divided into horizons including the O horizon of organic material, the A horizon where humus builds up, the B horizon where minerals and organic matter are deposited, and the C horizon of unaltered rock. The document also states that soil formation is influenced by climate, organisms, relief, parent material, and time according to Jenny's 1941 model of soil formation.