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Nitrogen cycle - Wikipedia

en.wikipedia.org/wiki/Nitrogen_cycle

The nitrogen cycle is the biogeochemical cycle by which nitrogen is converted into various chemical forms as it circulates among the atmosphere and terrestrial and marine ecosystems. The conversion ...

The Nitrogen Cycle - Boundless

www.boundless.com/microbiology/textbooks/boundless-microbiology-textbook/microbial-ecology-16/nutrient-cycles-195/the-nitrogen-cycle-984-5464/

The nitrogen cycle is the process by which nitrogen is converted from ... Nitrogen is converted from atmospheric nitrogen (N2) into usable forms, such as ... to use atmospheric nitrogen (N2), it must be "fixed" or converted into ammonia (NH3). ... This is important because plants can assimilate nitrate into their tissues, and ...

What is the process of converting nitrogen into a form that plants can ...

www.answers.com/Q/What_is_the_process_of_converting_nitrogen_into_a_form_that_plants_can_use

The process is called nitrogen fixation. ... The process of converting nitrogen into a form plants can use is known as nitrogen? Nitrogen Fixation -Eugene Chung.

The Nitrogen Cycle - Environmental Monitor - Fondriest Environmental

www.fondriest.com/news/nitrogencycle.htm

Aug 2, 2010 ... N2 can be converted directly into NO3- through processes that exert a tremendous ... A small group of bacteria and cyanobacteria are capable using the enzyme ... Plants take up these forms of nitrogen through their roots, and ...

Nitrogen Cycle

environ.andrew.cmu.edu/m3/s4/cycleNitro.shtml

Seventy-nine percent of the atmosphere is nitrogen in the form of N2 gas. ... This process of conversion is called nitrogen fixation, and makes the nitrogen ... Plants can not use N2, and the N2 can therefore escape into the atmosphere. Farmers ...

BBC - GCSE Bitesize: Nitrogen cycle

www.bbc.co.uk/schools/gcsebitesize/science/add_gateway_pre_2011/greenworld/recyclingrev2.shtml

We're updating subjects as fast as we can. Visit ... Nitrogen gas is converted to nitrate compounds by nitrogen-fixing bacteria in soil or root nodules. Lightning also ... The Haber process converts nitrogen gas into ammonia used in fertilizers. Ammonia is ... Plants absorb nitrates from the soil and use these to build up proteins.

The Nitrogen Cycle - Conserve Energy Future

www.conserve-energy-future.com/nitrogen-cycle.php

The nitrogen cycle is split up into five main processes. ... Nitrogen gas cannot be directly used by plants and therefore needs to be converted into nitrate compound by nitrogen fixing ... Nitrogen is found in two major forms in the atmosphere. ... The nitrogen can also be used as energy for these organisms to produce carbon ...

Nitrogen fixation

archive.bio.ed.ac.uk/jdeacon/microbes/nitrogen.htm

However, N2 is unavailable for use by most organisms because there is a ... some bacteria can convert N2 into ammonia by the process termed nitrogen fixation; these bacteria are either free-living or form symbiotic associations with plants or ...

Soil Management - Nitrogen - ctahr - University of Hawaii

www.ctahr.hawaii.edu/mauisoil/c_nutrients01.aspx

Denitrification: Conversion of nitrate to atmospheric forms of nitrogen ... Ammonium can escape from the surface of the soil under certain conditions and is harmful ... Organic nitrogen must be converted to ammonium before it is used by plants. ... is necessary to convert N2 gas into ammonium through this biological process.

BBC Bitesize - GCSE Biology - Water, nitrogen and carbon cycles ...

www.bbc.co.uk/education/guides/z72v4wx/revision/2

Nitrogen from the air is converted into soluble ions that plant roots can absorb. It forms part of nitrogen compounds in the plants, and is then passed from one organism to the ... The Haber process converts nitrogen gas into ammonia for use in fertilisers. ... Plants absorb nitrates from the soil and use these to make proteins .

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The nitrogen cycle | Sciencelearn Hub

sciencelearn.org.nz

Jul 30, 2013 ... As a gas, however, nitrogen can't be used by most living things. ... It has to be converted or 'fixed' to a more usable form through a process called fixation. ... Animals obtain these compounds when they eat the plants. ... Nitrifying bacteria in the soil convert ammonia into nitrite (NO2<sup>-</sup>) and then into ni...

What converts nitrogen from the air into a form plants can use ...

www.reference.com

Soil converts nitrogen into a form plants can use. Nitrates in soil and water are converted to nitrogen by bacteria, fixed by lightning and released into the air ...

nitrogen

www.cas.miamioh.edu

These organisms convert nitrogen in the soil to ammonia, which can then be taken up ... After nitrogen has been fixed, other bacteria convert it into nitrate, in a process ... Plants cannot use the nitrogen in our atmosphere without the assistance of ... form of nitrates while animals assimilate their nitrogen by eating the plants.