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..
How are local winds and global winds differ? local winds-are winds that blow over short distances caused by unequal heating of the earths surface in a small area. global winds-are winds that blow around the earth from â¦ the north pole to the south pole.
Winds are part of Earth's atmospheric circulation. Play media. Global surface wind vector flow lines colored by wind speed from June 1, 2011 to October 31, 2011. Prevailing winds are winds that blow predominantly from a single general direction over a particular point on the Earth 's surface.inds are part of Earth's atmospheric circulation. Play media. Global surface wind vector flow lines colored by wind speed from June 1, 2011 to October 31, 2011. Prevailing winds are winds that blow predominantly from a single general direction over a particular point on the Earth 's surface.