The Ordovician is one of the geological ages.

He ate one apple.

The geology of this area is very unique.

Living in this age is very exciting.

This story depicts the adventures of Nori.

The laws of this country respect the 'rules' from ancient times.

Mr. Nishi is my best friend.

He is majoring in geology.

Geology is a study that elucidates the history of the Earth.

This is my first question.