Labor certification is  a United States of America immigration process step. Its stated goal is to protect U.S. workers and the U.S. labor market by ensuring that foreign workers seeking immigrant visa classifications are not displacing equally qualified U.S. workers..
Confidence votes 24.1K. Local winds are caused by unequal heating within a small area. Global winds are created from all around the Earth due to breezes that make Wind. See nasa.gov/nasatv. Local winds are caused by unequal heating within a small area. Global winds are created from all around the Earth due to breezes that make Wind.
Weather - Wind. 1  Trade winds - Trade winds occur near the equator and flow from either the north or south towards the equator. They curve towards the west due to the spin of the Earth. 2  Prevailing westerlies - In the middle latitudes of the Earth, between 35 and 65 degrees latitude, are the prevailing westerly winds.