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Nitrogen makes up 78% of our atmosphere and the atmosphere contains 3,346,200,000,000,000,000 cubic meters of nitrogen. Because nitrogen is a gas it tends to gather in the atmosphere rather then say, stay trapped underground. That is why its maximum concentration is in the atmosphere. It's a good thing there is so much in our atmosphere too. Without it, the earth would get pummeled by gamma rays from our sun. This could turn the earth into a radioactive wasteland.

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13y ago

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