Answers

2014-03-18T12:28:10+05:30
The invisible natural gaseous substance surrounding the earth, mainly a mixture of Nitrogen and Oxygen.
2 5 2
good enough
Yea... Thank You!
don't you think it sounds more like atmosphere than air
Ni, Atmosphere is a different thing. It is a layer of air surrounding the earth. See, it's totally different!
2014-03-18T13:39:08+05:30
hi;
A colorless, odorless, tasteless, gaseous mixture is known as air.It is not necessary that it surrounds only earth.It may be present on other planets too.

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