can someone explain the nitrogen cycle?

Answer 1

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 bacteria present 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.

Answer 2

Explain The Nitrogen Cycle

Answer 3

Simple Nitrogen Cycle

Answer 4

For the best answers, search on this site https://shorturl.im/NKRXf

The nitrogen cycle is a process where harmful ammonia is rendered into less harmless forms by several sets of bacteria. What happens is this: 1. Fish waste, food, dead fish and plants, etc all turn into ammonia, which is lethal to fish. 2. The first set of bacteria turns ammonia into the less harmful nitrite. 3. A second set of bacteria turns nitrites into the even less harmful nitrate. This is important because fish cannot live in water with ammonia nor nitrites, but they can live in water with a little nitrate. Nitrates are eventually removed from the aquarium (usually through weekly water changes) before they're allowed to build up to toxic levels.

Answer 5

This Site Might Help You.

RE:
can someone explain the nitrogen cycle?

Answer 6

Nitrogen in air is directly converted to nitrogen in soil by lightning. And also by Nitrogen fixing bacteria in school and root nodules. Ammonium compounds formed during the breakdown of decay are converted to to nitrites by nitrifying bacteria (Nitrification) and then to nitrates so it can be used by plants. This process can also be reversed when denitrifying bacteria changes nitrates in the soil into atmospheric nitrogen.

Answer 7

there are process which uses up the nitrogen in the atmosphere like thuman which has protoplasm which contains mainly of protein, and animal also uses up the soil nitrogen since they can not make use of the nitrogen in the atmosphere.
process which replenish soil nitrogen
1)oxidation of atmospheric nitrogen;during electrical discharge like lightining some of the nitrogen in the atmosphere undergoes oxidation to form oxides which then dissolves in rain water to form dioxonitrate(III) and HNO3 which then react with mineral salts to form trioxonitrates(V).
N2+O2---)2NO+O2----)NO2
4NO2+2H2O+O2---->4HNO3#]
2)ACTION OF NITROGEN FIXING BACTERIA;soil micro-organisms likesymbiotic bacteria e.g rhizobium which leave in the root noodles of leguminious plant are able to convert atmospheric nitrogen into nitrogenous organic compound like protein which are used up by plants and then released into the soil when the plants die.
3)decay of dead matter;nitrogen which has been used up by plants and anomals return to the soil as excretory products and dead matters.the nitrogenous compound in this form are the converted into NH3 by purefying bacteria and fungi.a group of bacteria known as nitrifying bacteria oxides the NH3 first into dioxonitrate(III) and the into trioxonitrates(V) this process is known as nitrification.

Answer 8

Fallow these links, they will give you ALL the information you need.

http://en.wikipedia.org/wiki/Nitrogen_cycle

http://en.wikipedia.org/wiki/Image:Nitrogen_Cycle.jpg