The 100th meridian roughly corresponds with the line that divides the Great Plains into an area that receive 20 inches (510 millimetres) or more of rainfall per year and an area that receives less than 20 in (510 mm). In this context, the High Plains, as well as Southern Alberta, south-western Saskatchewan and Eastern Montana are mainly semi hot steppe land and are generally characterised by rangeland or marginal farmland. The region (especially the High Plains) is periodically subjected to extended periods of drought; high winds in the region may then generate devastating dust storms. The eastern Great Plains near the eastern boundary falls in the humid subtropical climate zone in the southern areas, and the northern and central areas fall in the humid continental climate. COUNT 4
QSN1 what is the name of the line that divides the great plains? ANS1 The 100th meridian QSN2 about how much rainfall does the great plains get per year? ANS2 20 inches QSN3 what do high winds in the area sometimes cause? ANS3 dust storms QSN4 what type of climate does the eastern great plains fall into? ANS4 humid subtropical climate