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प्रश्न
Give reason:
Air pressure decreases with increasing altitude.
उत्तर
- The proportion of dust in the air, water vapour, heavy gases, etc. is higher in the air closer to the surface of the earth.
- This proportion decreases with increasing altitude. As its effect, the air becomes thinner. This, in turn, results in a fall in air pressure. In this way, air pressure decreases with increasing altitude.
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