Question

what is nitrogen fixation​

Answer 1

Answer:

Nitrogen fixation is a process by which molecular nitrogen in the air is converted into ammonia (NH

3) or related nitrogenous compounds in soil.[1] Atmospheric nitrogen is molecular dinitrogen, a relatively nonreactive molecule that is metabolically useless to all but a few microorganisms. Biological nitrogen fixation converts N

2 into ammonia, which is metabolized by most organisms.

Nitrogen fixation is essential to life because fixed inorganic nitrogen compounds are required for the biosynthesis of all nitrogen-containing organic compounds, such as amino acids and proteins, nucleoside triphosphates and nucleic acids. As part of the nitrogen cycle, it is essential for agriculture and the manufacture of fertilizer. It is also, indirectly, relevant to the manufacture of all nitrogen chemical compounds, which includes some explosives, pharmaceuticals and dyes.

Nitrogen fixation is carried out naturally in soil by microorganisms termed diazotrophs that include bacteria such as Azotobacter and archaea. Some nitrogen-fixing bacteria have symbiotic relationships with plant groups, especially legumes.[2] Looser non-symbiotic relationships between diazotrophs and plants are often referred to as associative, as seen in nitrogen fixation on rice roots. Nitrogen fixation occurs between some termites and fungi.[3] It occurs naturally in the air by means of NOx production by lightning.[4][5]

All biological nitrogen fixation is effected by enzymes called nitrogenases.[6] These enzymes contain iron, often with a second metal, usually molybdenum but sometimes vanadium.

Answer 2

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Here is your answer.. :)

Nitrogen fixation refers to the conversion of atmospheric nitrogen gas into a form usable by plants and other organisms.

Explanation:

Nitrogen fixation is the process by which atmospheric nitrogen is converted either by a natural or an industrial means to a form of nitrogen such as ammonia. In nature, most nitrogen is harvested from the atmosphere by microorganisms to form ammonia, nitrites, and nitrates that can be used by plants. In industry, ammonia is synthesized from atmospheric nitrogen and hydrogen by the Haber-Bosch method, a process that Fritz Haber developed in about 1909 and which soon after was adapted for large-scale production by Carl Bosch. Commercially produced ammonia is used to make a wide variety of nitrogen compounds, including fertilizer and explosives.