Nitrogen cycle definitions

Nitrogen cycle

The nitrogen cycle is the process by which nitrogen is converted between its various chemical forms. This transformation can be carried out through both biological and physical processes. Important processes in the nitrogen cycle include fixation, ammonification, nitrification, and denitrification. The majority of Earth`s atmosphere (78%) is nitr....
Found on http://en.wikipedia.org/wiki/Nitrogen_cycle

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Nitrogen Cycle

The natural process (nitrification) by which bacteria convert fish waste and other decaying matter into less harmful compounds. See article.
Found on http://www.aquahobby.com/articles/e_glossary.php

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nitrogen cycle

circulation of nitrogen in various forms through nature. Nitrogen, a component of proteins and nucleic acids, is essential to life on Earth. ... [11 related articles]
Found on http://www.britannica.com/eb/a-z/n/45

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Nitrogen Cycle

The complex series of reactions by which nitrogen is slowly but continually recycled in the atmosphere, lithosphere and hydrosphere.
Found on http://www.chemistry-dictionary.com/definition/nitrogen+cycle.php

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Nitrogen Cycle

The complex series of reactions by which nitrogen is slowly but continually recycled in the atmosphere, lithosphere and hydrosphere.
Found on http://www.encyclo.co.uk/local/20728

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nitrogen cycle

<biochemistry> The global cycle of moving various forms of nitrogen through the air, water, soil, plants, animals of the planet. ... See: nitrogen fixation. ... (09 Oct 1997) ...
Found on http://www.encyclo.co.uk/local/20973

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Nitrogen cycle

Cyclic movement of nitrogen in different chemical forms from the environment, to organisms, and then back to the environment.
Found on http://www.encyclo.co.uk/visitor-contributions.php

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Nitrogen Cycle

is the process whereby nitrogen, which is vital to all plant life, is circulated through food chains
Found on http://www.epaw.co.uk/EPT/glossary.html

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nitrogen cycle

Type: Term Definitions: 1. the series of events in which the nitrogen of the atmosphere is fixed, thus made available for plant and animal life, and is then returned to the atmosphere: nitrifying bacteria convert N₂ and O₂ to NO₂− and NO₃−, the latter be...
Found on http://www.medilexicon.com/medicaldictionary.php?t=22216

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Nitrogen Cycle

Model that describes the movement of nitrogen in its many forms between the hydrosphere, lithosphere, atmosphere and biosphere.
Found on http://www.physicalgeography.net/physgeoglos/n.html

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nitrogen cycle

[n] - the circulation of nitrogen
Found on http://www.webdictionary.co.uk/definition.php?query=nitrogen%20cycle

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nitrogen cycle

noun the circulation of nitrogen; nitrates from the soil are absorbed by plants which are eaten by animals that die and decay returning the nitrogen back to the soil
Found on https://www.encyclo.co.uk/local/20974

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nitrogen cycle

Process of nitrogen passing through the ecosystem. Nitrogen, in the form of inorganic compounds (such as nitrates) in the soil, is absorbed by plants and turned into organic compounds (such as proteins) in plant tissue. A proportion of this nitrogen is eaten by herbivores, with some of this in turn b...
Found on https://www.encyclo.co.uk/local/21221

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nitrogen cycle

the continuous sequence of events by which atmospheric nitrogen and nitrogenous compounds in the soil are converted, as by nitrification and nitrogen fixation, into substances that can be utilized by green plants, the substances returning to the air and soil as a result of the decay of the plants and denitrification.
Found on https://www.infoplease.com/dictionary/nitrogen-cycle

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