A glacial valley cross-sectional shape is a U shape whereas a stream valley is usually a V shape. The U shape comes from the scouring action of the alpine glaciers which carries rocks with it which can abrade the walls of the valley and the glacier occupies the whole valley so scours out such a shape whereas the stream cuts down and water washes in from the sides of the valley into the stream or river creating the V shape.
By looking at all of the topographic maps given, the profile that best shows the topography along the line AD is going to be the first graph. This is the one that shows the best contour line elevations that are in feet. <span />
They grow foods and tends livestock to provide for a family
