Question

Give reason.
a) The inner core is in firm and solid in state​

Answer 1

Answer:

Earth´s inner core and outer core are both made of an iron-nickel alloy. The state of matter (solid, liquid or gas) of a given material depends on its temperature and pressure. ... Although the inner core is very hot, it is solid because it is experiencing very high pressure.

Explanation:

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Answer 2

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The inner core is solid because it is made of very dense, or heavy, materials - like iron and nickel.