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.
The core of the Earth has two distinct regions. There is a liquid outer core and a solid inner core. Both layers of the core are made of iron and nickel. The inner core is a giant furnace at super-high temperatures and pressures. The flowing metal of the outer core helps create a dynamo effect. Dynamos can create large magnetic fields. In the case of the Earth, the magnetic field protects our planet from space, solar winds and solar radiation.