Please give me a glass of water.

He drank water.

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.

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

The underground water in this area is very clean and is used as drinking water.

He was my student, but now he has become so proficient that it can be said 'the student has surpassed his teacher.'

Global warming is a big issue that affects all of us.

He is an expert in geophysics.