An interdisciplinary study of the diverse life in the soil beneath our feet that includes bacteria, fungi, protists, nematodes, arthropods, invertebrate, viruses, and the essential functional roles these organisms contribute to sustainability of the planet. Repeatable one time. Pre: TPSS/PEPS/SUST 371 or BIOL 375, or MICR 351, or consent. (Cross-listed as BIOL 480)