Ammonium oxidation is the biological and chemical process in which ammonium ($$NH_4^+$$) is converted into nitrite ($$NO_2^-$$) or nitrate ($$NO_3^-$$) through the action of nitrifying bacteria. This process is a crucial step in the nitrogen cycle, helping to transform ammonia produced from organic matter into forms that plants can utilize, thus linking microbial activity with soil fertility and ecosystem health.
congrats on reading the definition of ammonium oxidation. now let's actually learn it.