Science, 18.10.2019 06:00, anand7373

Write a short note on nitrogen cycle ?

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The correct answer was given: jack626259

The nitrogen cycle involves three major steps: nitrogen fixation, nitrification, and denitrification. It is a cycle within the biosphere which involves the atmosphere, hydrosphere, and lithosphere. Nitrogen is found in several locations, or reservoirs. It is most prevalent in sediments and rocks, second in the atmosphere (78%).

Approximately 78% of air is Nitrogen. Nitrogen is important to life because it is a key part of amino and nucleic acids. Also, it is an important part of ATP, which is the basic energy molecule for living things.

Neither plants or animals can obtain nitrogen directly from the atmosphere. Instead, they depend on a process known as nitrogen fixation. Key players in this process are legumes and the symbiotic bacteria which are associated with the legume's root nodules. These bacteria are known as nitrogen-fixing bacteria. These organisms convert nitrogen in the soil to ammonia, which can then be taken up by plants. This process also occurs in aquatic ecosystems, where cyanobacteria participate.

After nitrogen has been fixed, other bacteria convert it into nitrate, in a process known as nitrification. In the first step of this process, Nitrosomonas convert ammonia into nitrite, and in the second step, nitrite is converted into nitrate, by Nitrobacter. This nitrate is then consumed by plants.

The final aspect of the nitrogen cycle is the process of denitrification. This process is performed by a variety of microscopic bacteria, fungi, and other organsims. Nitrates in the soil are broken down by these organsisms, and nitrogen is released into the atmosphere. This complete the cycle.

The correct answer was given: mahitej

Nitrogen gas makes up 78% of our atmosphere and nitrogen it's also a part of many molecules essential to life like protein nucleic acid DNA and RNA and some vitamins nitrogen is found in other biologically

important compounds such as alcohol lights urea too .nitrogen is does an essential nutrient for all life forms and life would be simple if all this life forms could use the atmospheric nitrogen directly

The correct answer was given: arpita734

NITROGEN CYCLE : The nitrogen cycle is the biogeochemical cycle by which nitrogen is converted into multiple chemical forms as it circulates among atmosphere, terrestrial, and marine ecosystems. Nitrogen is a crucially important component for all life. ... It is an important part of many cells and processes such as amino acids, proteins and even our DNA.

Many human activities have a significant impact on the nitrogen cycle. Burning fossil fuels, application of nitrogen-based fertilizers, and other activities can dramatically increase the amount of biologically available nitrogen in an ecosystem.

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The correct answer was given: karanrai123

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The atmosphere contains mainly nitrogen. in fact, the percentage of nitrogen in the air is 78%.

1) Atmospheric nitrogen is converted into nitrates in the soil by nitrogen fixing bacteriapresent in the root nodules of leguminous plants

2)Nitrogen fixing bacteria present freely in the soil convert atmospheric nitrogen into ammonia in the soil

3)Nitrates in the soil are assimilated (absorbed or taken up) by plants

4)Plants are eaten by animals

5)When plants and animals die or excrete, the nitrates and ammonia go back into the soil

6)Denitrifying bacteria converts nitrates in the soil back into atmospheric nitrogen and thus the cycle continues

7)NOTE- atmospheric nitrogen can also be converted into nitrates in the soil by lightening storms. lightening creates so much energy in the atmosphere that the atmospheric nitrogen reacts and enters the soil as nitrates.

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The correct answer was given: helper6462

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The nitrogen cycle is the biogeochemical cycle by which the nitrogen is converted into multiple chemical forms as it circulates among atmosphere ,terrestrial, and marine ecosystems . The conversion of nitrogen can be carried out through both biological and physical processess.....

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The correct answer was given: vishal7056

answer:

Nitrogen Cycle is a biogeochemical process through which nitrogen is converted into many forms, consecutively passing from the atmosphere to the soil to organism and back into the atmosphere. It involves several processes such as nitrogen fixation, nitrification, denitrification, decay and putrefaction.

The correct answer was given: jivan99

answer:

The nitrogen cycle is the biogeochemical cycle by which nitrogen is converted into multiple chemical forms as it circulates among atmosphere, terrestrial, and marine ecosystems. The conversion of nitrogen can be carried out through both biological and physical processes.

Explanation:

Hope it helps you.Please mark as Brainliest.

The correct answer was given: bhavya1650

Explanation:

The atmospheric nitrogen moves from atmosphere to the soil from the soil to the plants from plants to the animals and from all living begins to the soil and back to the atmosphere from the soil this cyclic journey of nitrogen is called nitrogen cycle.

The correct answer was given: priyansh86

Explanation:

the circulation of nitrogen to living organisms of biosphere (air, , food)

The correct answer was given: sandhu2840

Explanation:

The correct answer was given: Brain

ue will use sib6 information to get to know about inter rat neighbours.so in rrc_idle state ue will read all present system informations based on the scheduling information present in sib1 and will get to know about all neighbours to serving cell including inter/intra rat/frequency.

basically sib3 to sib8 used by ue for cell selection/re-selection

The correct answer was given: Brain

answer:

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