Extensive development of dairy farming in the dairy belt of North America has been possible due to the presence of a combination of physical and economic factors. The region receives a rainfall varying between 55 and 125 cm. The rainfall efficiency is further increased by relatively lower temperature ranging between 18° and 24°C. The cattle yield more milk in a cool climate and the milk can also be kept for a longer time at lower temperature.
Wind is an air movement having both direction and speed. Depending on the cause of the winds, they can blow in many directions.The Easterly winds blow from east to west whereas the westerly winds blow from west to east.
EXAMIANS