التعريف: organic particles in soil or water, usually defined by size class, (eg: up to 2mm in soil, or 1mm at sea) which may include detritus, as well as living particles such as microbes or pollen
التعريف: Component found in mineralized skeletal tissue, (a specialized form of biogenic tissue in which the extracellular matrix is mineralized, and which functions in mechanical and structural support.)
