Consider the following statements related to water vapours: 1. It is a variable gas in the atmosphere, which decreases with altitude 2. In the dry and cold areas of desert and polar regions, it may be less than one per cent of the air Which of the statements given above is/are correct?
Both 1 and 2
Water vapour is a highly variable atmospheric gas whose concentration generally decreases with altitude, and it also varies geographically, ranging up to about 4 per cent by volume in warm, humid tropical regions to less than one per cent in cold, dry desert and polar areas. Both given statements accurately describe this variability, making 'Both 1 and 2' the correct choice.
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