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.
Global and Local Winds, Page 1. Wind is the horizontal movement of air. All wind is caused by. the uneven heating of Earthâs surface, which sets convection. currents in motion. Convection currents on a large scale cause. global winds; convection currents on a small scale cause local winds.