Web Results

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, terrestrial, and marine ecosystems. The conversion of nitrogen can be carried out through both biological and ... The processes of the nitrogen cycle transform nitrogen from one form to ...

www.sciencelearn.org.nz/resources/960-the-nitrogen-cycle

Jul 30, 2013 ... Nitrogen is the most abundant element in our planet's atmosphere. ... It has to be converted or 'fixed' to a more usable form through a process called fixation. ... this nitrogen to ammonium ions (NH4+), which can be used by plants. ... Nitrifying bacteria in the soil convert ammonia into nitrite (NO2-) and then ...

www.answers.com/Q/What_is_the_process_of_converting_nitrogen_into_a_form_that_plants_can_use

What is the process in which nitrogen is converted into a form plants can use? Nitrogen fixation is the process in which nitrogen is converted into a form that ...

www.siue.edu/~rbrugam/Nitrogen.pdf

into compounds they can use. This process is called ... Step 1- Nitrogen Fixation- Special bacteria convert the nitrogen gas (N2 ) to ammonia (NH3) which the plants can use. ▫. Step 2- Nitrification- Nitrification is the process which converts the ammonia ... Four forms of nitrogen are used as fertilizer: ▫. Nitrate. ▫. Ammonia.

courses.lumenlearning.com/boundless-microbiology/chapter/nutrient-cycles

Essential elements are often stored in reservoirs, where they can be taken ... Humans extract carbon and nitrogen from the geosphere and use them for ... CO 2 dissolves in the water and algae, plants and bacteria convert it into organic carbon. .... is the process by which nitrogen is converted from organic to inorganic forms; ...

www.lenntech.com/nitrogen-cycle.htm

The gaseous form of nitrogen (N2), makes up 78% of the troposphere. ... Plants can use ammonia as a nitrogen source. ... specialized decomposing bacteria will start a process called ammonification, to convert them back into ammonia and ...

www.cas.miamioh.edu/mbi-ws/biogeochemicalcycles/Nitrogen/nitrogen.htm

These organisms convert nitrogen in the soil to ammonia, which can then be taken up by ... 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 ... Plant roots assimilate Nitrogen mainly in the form of nitrates while animals ...

www.biology-pages.info/N/NitrogenCycle.html

But most organisms cannot use nitrogen in this form. Plants must secure ... Three processes are responsible for most of the nitrogen fixation in the biosphere: atmospheric ... Ammonia can be taken up directly by plants — usually through their roots. However, most of the ammonia produced by decay is converted into nitrates.

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.