He is an expert in teratology, studying the strange forms of organisms.

The earth's atmosphere provides the oxygen necessary for us to live.

The potential energy of this ball is proportional to its height.

The place of articulation is a very important concept in phonetics.

His usual location is the seat at the very back of the library.

Earth science is an important field of study for unraveling the mysteries of nature.

I am an Earthling.

We are searching for extraterrestrial life.

The process of terraforming is part of transforming other planets into a habitable environment for humans.

He has a deep interest in teratology.