Question

what is inner core
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Answer 1

Earth's inner core is the innermost geologic layer of the Earth. It is primarily a solid ball with a radius of about 1,220 kilometres, which is about 20% of the Earth's radius and 70% of the Moon's radius. There are no samples of the Earth’s core available for direct measurement, as there are for the Earth's mantle.

Answer 2

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Earth's inner core is the innermost geologic layer of the Earth. It is primarily a solid ball with a radius of about 1,220 kilometres, which is about 20% of the Earth's radius and 70% of the Moon's radius. There are no samples of the Earth’s core available for direct measurement, as there are for the Earth's mantle.

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