Describe the composition of the core of the Earth.
Select one:
The inner core is composed of liquid iron surrounded by a solid nickel-iron alloy out core.
The inner core is composed of solid iron surrounded by a molten nickel-iron alloy outer core.
Both the inner and outer cores are composed of molten iron, with the core being a higher temperature.
The inner and outer cores of the Earth are both composed of a solid nickel-iron alloy, with the inner core having a higher density.