Nickel & Iron are the main constituents of __________?

Q. Nickel & Iron are the main constituents of __________?
Answer: Earth Core
Notes: At the center of the Earth we have the core, which has two parts. The solid, inner core of iron Which has a radius of about 760 miles (about 1,220 km).Sourrounding it a liquid exist composed of nickle-iron alloy.

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