The<unk> , also called the<unk> –Bosch<unk> , is the reaction of nitrogen and hydrogen, over an iron substrate, to produce ammonia.  The<unk>  is important because ammonia is difficult to produce on an industrial scale.  Even though 78.1% of the air we breathe is nitrogen, the gas is relatively unreactive because nitrogen molecules are held together by strong triple bonds. It was not until the early 20th century that this method was developed to harness the atmospheric abundance of nitrogen to create ammonia, which can then be oxidized to make the nitrates and nitrites essential for the production of nitrate fertilizer and munitions.
Haber process
Pseudopolyp
Clavicle
Sponge
Albrecht Kossel
Demegestone
Kerion
Buchnera 