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The atmosphere is a gaseous envelope which surrounds Earth’s surface.
Consider the following statements regarding the Earth’s atmosphere.
1) Rotation of Earth helps in binding of atmosphere to Earth’s surface.
2) It sustains life on the Earth by not allowing Earth to become too hot or too cold.
3) Content of water vapour increases from the equator towards the poles.
Choose the correct statement/s from the following code.

1, 2 only.
2 only.
2, 3 only.
All the above.
Explanation:
Rotation of earth induces centrifugal force which pushes any object away from the Earth’ssurface. Thus rotation doesn’t help atmosphere to bind to Earth’s surface.Atmosphere filters the harmful rays from the Sun and also helps in controlling thetemperature so that life can be sustained.Content of water vapour is highest near to surface of the Earth ie upto some 5 kms from thesurface, beyond that it reduces drastically.
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