My Sansar

WIND    A wind is a current of air that is moving across the earth's surface. The movement in air occurs due to the difference in the pressures of the air. Winds always blow from the area of high pressure to the area of low pressure. The more the difference in… Read more

CHANGES IN THE EAR TH'S CRUST           The changes in the earth's crust are caused by certain forces or agents. These forces may be divided into two groups, namely, external and internal. (1) External forces include climate, running water, wind, glacier,… Read more