There are currently only 13 members of the Senate who served in the military. In all, 97 members of the next session of Congress will have served in the U.S. military. That means less than 18 percent of the new congressional delegation served in the armed forces.
the layer of the earth resposible for the earths magnetic field is the core which consists of the liquid core/outer core and the solid core/inner core.
Below the mantle is the core, which is the very center of the Earth, made mostly of metals like iron. The outer core is a liquid that flows in circles. This is like the delicious cream filling of the cake! In fact, the liquid flow of the outer core is responsible for creating the Earth's magnetic field.