Naughty is the leading class in the world. There are about 2250 km in thickness, this layer is composed of steel, and the naughty world of icy Nickels by molten substances.
The outer core is the premier address in the world. A thickness of approximately 2250 km in this class consists of iron and nickel. The outer core is molten substance.
Outer core is the section of the inner earth has a thickness of about 2, the 250 kilometers. In this class, consisting of iron and nickel. The core layer is molten substance.