The Ordovician is one of the geological ages.

The geology of this area is very unique.

He ate one apple.

Living in this age is very exciting.

Mr. Nishi is my best friend.

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

This story depicts the adventures of Nori.

He is a world-renowned geologist.

He is majoring in geology.

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