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Why do plants and animal and other organisms need nitrogen?
Nitrogen is required by plants and animals for protein synthesis
How is Nitrogen stored in the biosphere?
Nitrogen is stored in the biosphere primarily in the atmosphere as N2 gas. It is also found in living organisms in proteins and nucleic acids, as well as in the soil in the form of organic matter, ammonia, nitrates, and nitrites. Nitrogen-fixing bacteria play a key role in converting atmospheric nitrogen into a form that can be utilized by plants and animals.
What is the origin of nitrogen in biological tissue?
The earths air is not made up of only oxygen. it is actually about 75% Nitrogen, and only about 12% oxygen. In fact, nitrogen is the most common element on earth. so every time you breathe, or eat or sweat, your body absorbs nitrogen. Also, you cannot really talk of Nitrogen having an 'origin', as it is constantly involved in a CYCLE. Check out this diagram of The Nitrogen Cycle. http://en.wikipedia.org/wiki/File:Nitrogen_Cycle.jpg
What is the form of most of the nitrogen in the world?
Nitrogen is present as amino acids in plants which is an important factor for growth. It is formed when lightening strikes and a chemical reaction is produced and the nitrogen produced is adsorbed by the plants. Example of an amino acid - Nitrobactor.Nitrogen also occurs as the following in air:-Nitrogen oxideNitrous oxideNitrogen dioxideNitratesNitrogen is mixed with hydrogen to form ammonia which is a fertiliser.
How do herbivores obtain the nitrogen they need?
Herbivores obtain nitrogen just like any other animal - through the air, which is mostly composed of nitrogen. However, organic nitrogen that can be used in proteins is only found in autotrophs. Through the nitrogen cycle, atmospheric nitrogen is fixed as organic nitrogen which is assimilated by plants. Herbivores, like omnivores and carnivores, get their nitrogen from food. The trick is getting the nitrogen "fixed" into the food in the first place. About 80% of earth's atmosphere is nitrogen, but atmospheric nitrogen is very nearly inert (the triple bond between the nitrogen atoms is difficult to break). It does not readily engage in chemical reactions, so plants and animals cannot get their nitrogen by breathing. Oxygen, on the other hand, reacts easily, so you'll find that you can get the oxygen you need directly from the atmosphere. Plants extract carbon directly from the atmosphere--from carbon dioxide and photosynthesis. That carbon, plus water and some other ingredients, produce the carbohydrates and other nutrients we get from plants. But like us, plants can't capture atmospheric nitrogen. They have to get the nitrogen they need for proteins & DNA from another source. So how does nitrogen get fixed into plants? Primarily via nitrogen compounds in the soil. There is a bit of nitrogen in any soil, thanks to decaying plants & animals and the activity of certain types of bacteria. But if you farm the soil intensively, you can quickly exhaust the naturally occurring nitrogen. One way to build up the nitrogen in soil is to exploit a symbiotic relationship between certain types of bacteria and a few types of plants. Bacteria that grow on the roots of some bean plants convert atmospheric nitrogen into compounds that stay in the soil. This is the phenomenon behind crop rotation with soy beans--you let the bacteria on the soy bean's root replenish the nitrogen in the soil. Then crops you grow in that soil pass that nitrogen through the food chain. For example, an herbivore might eat the crop directly, or a carnivore could eat the flesh of an herbivore that ate the crop that grew in the field that once grew soy beans that hosted nitrogen-fixing bacteria. Another way to get the nitrogen into the soil is via animal waste. Manure contains a good deal of fixed nitrogen. Hence the smell that bothers city folk when they visit farm country. Today, a good deal of the nitrogen in crops comes from manufactured fertilizer. The Haber-Bosch chemical process, developed about a hundred years ago, draws nitrogen from the air and fixes it in forms that can be used for fertilizer (or explosives.) About half of the nitrogen in your body came from the atmosphere via the Haber-Bosch process. (See "The Alchemy of Air" by Thomas Hager, 2008, for more on the history of Haber-Bosch.) Without Haber-Bosch, a couple billion of us humans would not be alive.
How do you get nitrogen on earth?
Nitrogen is fixed
What is the percentage of nitrogen in the Earth's atmosphere?
The percentage of nitrogen in the Earth's atmosphere is about 78.
What planet is Its atmosphere is mostly nitrogen?
Planet Earth - about 80%.
What is the percentage of nitrogen present on Earth?
about 70 percent of the atmosphere is nitrogen
Is nitrogen the main part of earth's atmosphere?
Yes, Earth's atmosphere is about 78% nitrogen.
Is 21 percent of the earth's atmosphere nitrogen?
No, 21% of Earth's atmosphere is oxygen. Nitrogen makes up 78%.
What is the percentage of nitrogen in the atmosphere?
Nitrogen makes up about 80% of the Earth's atmosphere.
What is the most abundent element in the earth's atmosphere?
Nitrogen is!
How much nitrogen is present in the Earth's atmosphere?
About 78 of the Earth's atmosphere is made up of nitrogen.
What gas covers most of the Earth?
Earth's atmosphere is composed mainly of nitrogen.
Which area on the illustration represents the largest reservoir of nitrogen on earth?
The illustration that represents the largest reservoir of nitrogen on earth should display the atmosphere. The atmosphere of earth contains around 78.09 % nitrogen.
What planets have nitrogen atmospheres?
Planets with nitrogen atmospheres include Earth and Venus. Nitrogen makes up about 78% of Earth's atmosphere and about 3.5% of Venus's atmosphere.
