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Multiple Choice Questions

Consider the following 1 water vapour 2 Nitrogen 3 Carbon dioxide 4 Methane How ...........

Geography (CDS) World climates

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Consider the following:

1. water vapour

2. Nitrogen

3. Carbon dioxide

4. Methane

How many of the above following are contained in the early atmosphere?

Only One

Only Two

Only Three

All Four

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Explanation:

All the statements are correct

During the cooling of the earth, gases and water vapour were released from the interior solid earth. This started the evolution of the present atmosphere. The early atmosphere largely contained water vapour, nitrogen, carbon dioxide, methane, ammonia and very little of free oxygen. The process through which the gases were outpoured from the interior is called degassing.

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