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.
it consists of the following - from the outside to the core: crust: the thin outer layer. mantle: under the crust/hot partly molten rock. outer core: lies below the mantle. it is responsible for the magnetic field on earth. inner core: the center of the earth. Is a ball of very hot solid iron.