what is the earth's core
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It is the part of Earth in the middle of our planet.It has a solid inner core and a liquid outer core.
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The outer core of the Earth is a liquid layer about 2,260 kilometers thick. It is made of iron and nickel. This is above the Earth's solid inner core and below the mantle. Its outer boundary is 2,890 km (1,800 mi) beneath the Earth's surface.
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