Answer» - The heated air from the equatorial region becomes lighter, starts ascending and after reaching higher altitudes, moves towards the polar region, i.e., towards the North and the South Pole.
- Due to low temperatures at the higher altitudes, the air cools down and becomes heavier.
- This heavier air descends down in both the hemispheres in the region between 25° to 35° parallels.
- This leads to the formation of high pressures, belts in these parallels of latitudes in both the hemispheres.
- This air is dry, hence the region does not get rainfall.
- Consequently, most of the hot deserts on the earth are found in these regions.
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