関連ワード:
what is earth's inner core made up of what is earth's outer core made up of what is the earth's outer core made out of what is the earth's inner core mostly made out of what is the earth's inner core mostly made up of what is earth's mantle made up of what is earth's upper mantle made out of earth's inner core is primarily made up of what element what is the outer and inner core of the earth made up of the earth's inner core is made up mainly of what 2 substances
