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Nitrogen cycle - Wikipedia


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


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 ...

The nitrogen cycle | Sciencelearn Hub


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...

The Nitrogen Cycle


Almost all of these forms are used by one type of organism or another, and as they ... Nitrogen fixation is the conversion of inert dinitrogen gas into a form that can be ... tissue compounds of photosynthetic organisms: algae and higher plants. ... is the reduction of living tissue and organic waste to ammonia, a process that is ...

The Nitrogen Cycle - Kimball's Biology Pages


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.

Nitrogen Cycle - Backyard Nature


The problem is that green plants can't use the nitrogen that's free in the atmosphere. ... The process of chemically altering unusable, free atmospheric nitrogen into a form usable by organisms is referred to as nitrogen fixation. ... The process of converting ammonia to nitrate, called nitrification, is usually accomplished by...

Forms of Nitrogen in the Soil - Plant and Soil Sciences eLibrary


Plants normally use nitrogen in only the ammonium and nitrate forms. ... Bacteria can convert nitrogen to organic forms through fixation. ... Moisture and oxygen are necessary for microbial function in both the mineralization and nitrification processes. .... When a plant residue with a wide C:N ratio is incorporated into the soil, ...

Soil Management - Nitrogen - University of Hawaii


Denitrification: Conversion of nitrate to atmospheric forms of nitrogen ... Organic nitrogen must be converted to ammonium before it is used by plants. ... In the soil, nitrogen fixating organisms can form special relationships with plants, called ... is necessary to convert N2 gas into ammonium through this biological process.

What is the process of converting nitrogen gas to protein? | Yahoo ...


Feb 10, 2013 ... As a result, nitrogen is most often utilized by organisms in the form ... Atmospheric nitrogen can be converted into the nitrates, the usable form of nitrogen. ... into nitrates and ammonium ions, which can then be used by plants.

The Nitrogen Cycle - Conserve Energy Future


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 ...

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


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


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 ...



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.