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That would be the inner core.
The core..............
The outer portion of the core is mostly molten iron. The inner core is solid metal.
The thin, solid, outermost layer of the Earth is officially known as the crust.
The Earth is made up of several layers, divided by sub-layers, divided by even more sub-layers. There is the core, which is mostly made up of solid iron; the outer core which is up to 10% liquid; the lower mantle which is ductile, the upper mantle and then the crust which on average is about 40 km thick. The outer core is called the 'liquid outer core' but is still made up of mostly solid rock.
The inner core.
Umm iron?
mantle
mantle
the inner core
The Inner Core
The core
That would be the inner core.
Thankfully, the solid layer of the Earth's crust is the outer, solid land we live on.
It is believed that the innermost layer of the earth, the inner core, is made mostly of iron and nickel.
The Inner (solid) and Outter (liquid) Core are made up of Nickel and Iron.
The core..............