Give a brief account of the plateaus of the world.
A plateau is an upland with rugged surface. The average height of a plateau is 600 metres above the sea level. Nearly 40% of total land surface of the earth is plateau. The Plateau of Tibet is also called Roof of the World, is the highest plateau in the world. The Deccan Plateau in India, the Arabian Plateau and the Brazil Plateau are some of the large plateaus of the world.