Bacteria
Ammonia, nitrates, nitrites
Bacteria =========================== Specifically a particular type of bacteria that live in nodules on the roots of certain plants (eg the Legume family) called "Nitrogen Fixing Bacteria" . Not other bacteria decompose organic material and release nitrogen back into the atmosphere.
nitrogen fixing bacteria
A few plants, especially, legumes (or pulses: pod bearers), of which there is a wide variety; are able to convert nitrogen gas (N2) from the atmosphere to produce Ammonia NH3, a fertilizer. They do this with the symbiotic help of a bacteria (Rhizobium).Lichens, Blue-green algae, and some soil bacteriaalso produce and contribute ammonia to natural ecosystems.Other organisms, chemoautotrophic bacteria, Nitrosomonas, and Nitrobac­ter, convert ammonia to compounds of nitrous oxides culminating in mineral Nitrates (compounds of the form (M)NO3), fertilizers. Examples are Sodium Nitrate (NaNO3) and Potassium Nitrate (KNO3).
I believe it is a nitrogen-fixing bacteria
Nitrogen-fixating prokaryotes (such as bacteria) present in the roots of legumes and some other plants take N2 from the air and convert it to nitrogen compounds usable by plants. Nitrogen fixing bacteria (diazotrophs).
Bacteria are the only organisms that can convert nitrogen into a usable form. Diazotroph or nitrogen-fixing bacteria are types of bacteria that perform this ability.
Bacteria =========================== Specifically a particular type of bacteria that live in nodules on the roots of certain plants (eg the Legume family) called "Nitrogen Fixing Bacteria" . Not other bacteria decompose organic material and release nitrogen back into the atmosphere.
The atmospheric nitrogen. This is a diatomic and triple bonded form of nitrogen that can not be metabolized by organisms other than some bacteria which convert it into usable form for plants.
nitrogen fixing bacteria
nitrogen
Living things that need nitrogen to make complex nitrogen compounds are called nitrogen-fixing organisms. These organisms have the ability to convert atmospheric nitrogen gas (N2) into usable forms such as ammonia or nitrates, which can be incorporated into various biological molecules. Examples of nitrogen-fixing organisms include certain bacteria and some plants, such as legumes.
nitrogen
Producers
Because the nitrogen in the air is in a form not usable to animals and plants. The only way animals get nitrogen to build protein and nucleic acid is by eating it. This is usually through plants, which get there nitrogen from the soil. They get it from the soil because bacteria in the soil turn the atmospheric nitrogen into a usable form. In a water ecosystem cyanobacteria (a.k.a. blue-green algae) transform the nitrogen from the atmosphere into usable forms of nitrate
Nitrogen fixing bacteria, such as Rhizobium.
Nitrogen gas is fairly inert and so is difficult for organisms to process. Instead, animals must get usable nitrogen compounds from their food.
The group is called diazotrophs. They are mainly bacteria.