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.
What are natural magnets? The Earth's overall magnetic field is caused by the rotation of the liquid outer core, made up of melted metal and rock. Generally, the main magnetic field overrides the magnetic field generated by the crust, but shorter magnetic wavelengths are able to escape this masking.