- why the houses in Rajasthan have thick walls and flat roofs ?
- why most of the world's desertsare located in the western margins of continents inthe subtropics ?
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- Most of the deserts are located in the western margin of continents in subtropics due to the fact that the winds are easterly. Therefore, the eastern margins receive more precipitation and moisture. The western margins are comparatively dry and thus deserts are concentrated in these regions. The trade winds also blow towards equator at west coasts and drive surface water offshore. This results in upwelling of cold water at west coasts and causes drier climate at western margin of continents.