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Is air natural gas?
Yes. But liquefied gases from oil reservoirs are also called natural gas - propane and butane mainly.
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Is natural gas denser then air?
No, Natural gas is lighter than air.
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Does natural gas pollute the air?
Burning anything pollutes but natural gas does not pollute as much as gasoline that's why they use propane indoors for forklifts and other machines. Of course, if natural gas was a dangerous polluter...
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How mush natural gas is in the air?
78 % nitrogen 20,95 % oxygen 0.93 % argon 0.038 % carbon dioxide And some other gases, and about 1% water vapor From: Larsi Search before you ask ;)
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Why is natural gas called natural gas?
It is a naturally occurring gas substance originating from the earth. It is largely methane, and was formed millions of years ago from vegetation and animal matter.