Match the symbols used in electric circuit diagrams to their functions. HE
o
a device that converts electric
energy into sound energy
>
a device that glows when it
receives current
a device that provides energy
to a circuit
a device that starts or stops
the flow of current

The table below shows the elements that mainly comprise each of the four layers of earth: elements in layers layer main elements crust oxygen, silicon mantle iron, magnesium outer core iron, nickel inner core iron which of these elements make up the layer that is 0.2 to 1.1 percent of earth's total diameter?