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nitrification: oxidation of ammonium or ammoniac to nitrite and nitrate by means of bacterial activity.
(nitrificación)
nitrates: used generically for materials containing this ion group made of nitrogen and oxygen; sources include animal wastes and some fertilizers; can seep into groundwater; linked to human health problems, including "blue baby" syndrome (methemoglobinemia).
(nitratos)
nitric acid: a component of acid rain; corrosive; damages buildings, vehicle surfaces, crops, forests, and aquatic life.
(ácido nítrico)
nutrient: an element or compound, such as nitrogen, phosphorus, and potassium, that is necessary for plant growth.
(nutriente)
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