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| Description: Biological activity includes deposition, decomposition, and accumulation of organic matter Humus = a dark, spongy, crumbly mass of material formed by partial decomposition Erosion = the dislodging and movement of soil by wind or water Occurs when vegetation is absent When deposited elsewhere referred to as sediment Picture Stats: Views: 303 Filesize: 114.18kB Height: 700 Width: 883 Source: https://biology-forums.com/index.php?action=gallery;sa=view;id=35717 |