Water Vapour in the atmosphere in percentage terms generally 1 Increases with altitude 2 Decre...........

Geography Atmosphere

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Water Vapour in the atmosphere ,in percentage terms,generally

1) Increases with altitude

2) Decreases with the distance from equator towards poles.

Which of the above is/are correct?

1 only

2 only

Both 1 and 2

None

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Explanation:

Water vapour is a variable gas in the atmosphere ,which decreases with altitude. This is also the reason why the greenhouse warming caused by water vapour. So, 1 is incorrect.In the warm and wet tropics,it may account for four percent of the air by volume,while in the dry and cold areas of desert and polar regions,it may beless than 1% of the air. Water vapour content thus also decreases from the equator towards the poles. So, 2 is correct.