The inner core of the Earth is extremely hot and is mainly composed of iron and nickel.

This coin is made of nickel.

It's high temperature today, it's hard to go out.

I was amazed at his extraordinary talent.

Please press this button in case of emergency.

It is a very beautiful view.

Is it possible to change the configuration of this computer?

It took him a year to compose that song.

Earth is one of the planets in the solar system.

In physics, the study of the 'nucleus' at the center of an atom is important.