biological nitrogen fixation

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• Nitrogen fixation — is the natural process, either biological or abiotic, by which nitrogen (N2) in the atmosphere is converted into ammonia (NH3).[1] This process is essential for life because fixed nitrogen is required to biosynthesize the basic building blocks of …   Wikipedia

• nitrogen fixation — The biological conversion of atmospheric nitrogen to a form that can be used by plants for their growth …   Combined glossary of agriculture

• nitrogen fixation — noun the assimilation of atmospheric nitrogen by soil bacteria and its release for plant use on the death of the bacteria • Hypernyms: ↑organic process, ↑biological process …   Useful english dictionary

• Nitrogen cycle — Schematic representation of the flow of nitrogen through the environment. The importance of bacteria in the cycle is immediately recognized as being a key element in the cycle, providing different forms of nitrogen compounds assimilable by higher …   Wikipedia

• Nitrogen — carbon ← nitrogen → oxygen ↑ N ↓ P …   Wikipedia

• Nitrogen assimilation — is a fundamental biological process that occurs in plants and algae that are incapable of independent nitrogen fixation. The assimilation of nitrogen has marked effects on plant productivity, biomass, and crop yield, and nitrogen deficiency leads …   Wikipedia

• Biological interaction — Biological interactions are the effects organisms in a community have on one another. In the natural world no organism exists in absolute isolation, and thus every organism must interact with the environment and other organisms. An organism s… …   Wikipedia

• nitrogen group element — ▪ chemical elements Introduction  any of the chemical elements that constitute Group Va of the periodic table (see Figure >). The group consists of nitrogen (N), phosphorus (P), arsenic (As), antimony (Sb), and bismuth (Bi). The elements share… …   Universalium

• biological process — noun a process occurring in living organisms • Syn: ↑organic process • Hypernyms: ↑process, ↑physical process • Hyponyms: ↑adaptation, ↑adaption, ↑adj …   Useful english dictionary

• Human impacts on the nitrogen cycle — Agricultural and industrial nitrogen (N) inputs to the environment currently exceed inputs from natural N fixation (Galloway 2003). As a consequence of anthropogenic inputs, the global nitrogen cycle (Fig. 1) has been significantly altered over… …   Wikipedia

• Nitrogen dioxide — Nitrogen dioxide …   Wikipedia