Revision as of 02:02, 31 August 2011 by PPK(Talk | contribs)(Created page with "A biologically active soil layer consisting of a mixture of mineral materials, such as clay, silt, and sand, as well as organic material, derived from the overlying O horizon; ge...")
A biologically active soil layer consisting of a mixture of mineral materials, such as clay, silt, and sand, as well as organic material, derived from the overlying O horizon; generally characterized by leaching.
