Answer:
A large, dry, barren region, usually having sandy or rocky soil and little or no vegetation, water lost to evaporation and transpiration in a desert exceeds the amount of precipitation about 25 cms. Deserts can be cold or hot deserts. The people in the past in desert areas led a nomadic life migrating from one place to another in search of food and water. Pastoralism was the main occupation of these migratory people.
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