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Basically, it's because nitrogen doesn't react easily with a lot of chemicals present in the earth's crust. Oxygen, however, does, so there's considerably less of it in our atmosphere and a lot of it locked up in solid compounds on and within the earth. So over the billions of years, it has "built up" in our atmosphere, and today comprises nearly 80% of the air we breathe.
The triple bond between the nitrogen atoms in nitrogen gas is very strong.it takes nearly a megajoule of energy to break apart one mole of nitrogen gas, This makes nitrogen very nearly inert at normal temperatures and pressures.
The element Nitrogen (N) makes up about 78% of the Earth's atmosphere. Nitrogen is a gas at room temperature and has the atomic number 7. Nitrogen is in Period 2 of the Periodic Table and is the first element in Group 15(5).
Because nitrogen is produced by nearly all living organisms, there aren't any activities that don't increase nitrogen in the biosphere. Three examples of these human activities are running, swimming, and walking.
Nitrogen already makes up about 80% of the air. It's hard to imagine a scenario in which "too much nitrogen being released" would add any appreciable (or even detectable) amount to that, and even if there were, nitrogen is very nearly inert under conditions we normally see on Earth. So pretty much nothing would happen to the environment.
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Without nitrogen in the atmosphere, we would be breathing in nearly pure oxygen, which would be fatal.
Depends somewhat on altitude, but generally nearly 80% is nitrogen.
Nitrogen and Oxygen make up nearly 99% of the dry atmosphere.
Nitrogen is necessary for life on earth. Without nitrogen, which makes up some 78% of the earth's atmosphere, we would be breathing in nearly pure oxygen and that would be fatal.
The atmosphere of the Earth is primarily nitrogen, which is about 78% of air by volume. Nearly 21% is oxygen, 1% is argon, and the remainder consists of trace gases and carbon dioxide.
Basically, it's because nitrogen doesn't react easily with a lot of chemicals present in the earth's crust. Oxygen, however, does, so there's considerably less of it in our atmosphere and a lot of it locked up in solid compounds on and within the earth. So over the billions of years, it has "built up" in our atmosphere, and today comprises nearly 80% of the air we breathe.
Originally there was nearly no oxygen in the atmosphere. (:
Mercury has virtually no atmosphere. Planet with thinnest Venus has a extremely dense atmosphere of mostly sulphur compared to Earth. Planet with densest. Earth has a moderately dense atmosphere of nearly 3 quarters nitrogen and oxygen. Planet with 2nd from densest. Mars has a thin atmosphere of mostly carbon and some oxygen. Planet with 2nd thinnest.
Often it is water vapour, which can vary from 0 to 4 %. Otherwise it is argon, at nearly 1%
The triple bond between the nitrogen atoms in nitrogen gas is very strong.it takes nearly a megajoule of energy to break apart one mole of nitrogen gas, This makes nitrogen very nearly inert at normal temperatures and pressures.