Question

why does humidity vary from place to place and time to time !

Answer 1

Humidity, the amount of water vapour in the air. It is the most variable characteristic of the atmosphere and constitutes a major factor in climate and weather. A brief treatment of humidity follows. For full treatment, see climate: Atmospheric humidity and precipitation.

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Answer 2

Humidity enters at primiraly by the evaporation of water from Earth surface land and sea. It content of the atmosphere varies from place to place and from time to time because the humidity capacity of air is determined by temperature.

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