He pūmotu tēnei, he momo haurehu, kāore ōna tae, kāore ōna kakara. He mea waiwai tonu ki ngā rauropi katoa hei hanga pūmua. Ka mitia te hauota o roto i te oneone hei taiora matua mā te tipu. E pātata ana ki te 80% o te kōhauhau o Papatūānuku he hauota, e noho takirua mai ana ngā ngota hei rāpoi ngota (N2). Ka whakamahia e te tangata i roto i ngā tukanga hanga kai, hanga rongoā, hanga whakahaumako, hanga tae, hanga pahū hoki.
Nitrogen is an element, a colourless, odourless gas. It is essential to all organisms for the production of protein. Nitrogen is absorbed from the soil as an important nutrient for plants. Almost 80% of the Earth’s atmosphere is nitrogen, existing as nitrogen molecules which have two atoms joined as pairs (N2). It is used in the manufacturing of food, drugs, fertiliser, dye and explosives.