The Silurian period is one of the geological eras.

He ate one apple.

The geology of this area is very unique.

Living in this age is very exciting.

We are aiming for a society where all people can enjoy welfare.

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.