_________is an aerobic chemolithotrophic process that ultimately oxidizes ammonia to nitrate, whereas , is a form of anaerobic respiration involving the oxidation of an organic compound using an oxidized nitrogenous compound, such as nitrate, as the terminal electron acceptor.
O Ammonification; nitrification
O Ammonification; denitrification
O Denitrification; nitrification
O Nitrification; denitrification