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

He warned about the dangers of nuclear warheads.

Nuclear reactions are used for mass production of energy.

In Japanese, the accent kernel greatly affects the pronunciation of words.

Thermonuclear reactions are the source of the sun's energy.

The use of nuclear bombs is one of the greatest threats to mankind.

He is spending a lot of time on experimental research.

It is reported that North Korea has conducted another underground nuclear test.

The number of nuclear-armed countries is increasing worldwide.

The caudate nucleus is a part of the brain that plays an important role in motor control.