Why is nitrogen the largest component of the atmosphere?
If it wasn't there wouldn't be any life.
There's really no explanation for why nitrogen is the most prevalent gas in the atmosphere other than the fact that it exists and is the only gas that can actually support life.
But if oxygen were the most prevalent gas in the atmosphere, many other gases—such as methane, ozone, and carbon monoxide—would also be too toxic to breathe, making the atmosphere unfit for human habitation.
The next most common gas is carbon dioxide, and if it were the most common gas, the greenhouse effect would cause the Earth to become much too hot to support life, much like Venus. The same is true for all other greenhouse gases, such as water vapor and methane.
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Nitrogen is the largest component of the atmosphere because it is relatively inert and stable, meaning it does not readily react with other substances. Additionally, nitrogen gas (N2) makes up about 78% of the Earth's atmosphere, which is largely due to its abundance in the Earth's crust and its release during volcanic activity and biological processes such as nitrogen fixation by certain bacteria.
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When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.
When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.
When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.
When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.

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