In 1971, 73 percent of members of Congress were veterans, but veterans made up fewer than 15 percent of the American population. Ten years later, 62 percent of Congress had served in the military, while just 12 percent of the population were veterans.
Perhaps it is the time old saying, Eat your crust!. The earth's crust is a little different then the crust on a piece of bread. It is not soft and chewy, but it hard and composed of different minerals. The thin, outermost layer of the earth is called the crust. It makes up only one percent of the earth's mass. The continental crust is thicker than the oceanic crust. It can range from 25 km thick at the edges to 70 km thick near the center.
A _____ cooling help led to the formation of the layers of the Earth. constant: You might expect to find rocks of the _____ density in the crust. lowest: The _____ is composed of rock and can be described as being solid. lithosphere: The _____ is the thinnest layer of the Earth. crust: The _____ is best described as solid but flowing. asthenosphere