N1I1T1R1I1F4I1C3A1T1I1O1N1S1
19 points
NITRIFICATIONS is validvalid
NITRIFICATION, the act of nitrifying
NITRIFICATION, the oxidation (as by bacteria) of ammonium salts to nitrites and the further oxidation of nitrites to nitrates
NITRIFICATION, the act of nitrifying
NITRIFICATION, the oxidation (as by bacteria) of ammonium salts to nitrites and the further oxidation of nitrites to nitrates