It is reported that North Korea has conducted another nuclear bomb test.

He is looking for a proving ground to test his new theory.

He conducted a thought experiment to solve a problem in physics.

He has a deep interest in archaeology.

Microorganisms are one of the basic forms of life.

Protists are single-celled organisms that live in water.

I am majoring in biology at university.

He is a world-renowned biologist.

Protecting the biosphere is important for the future of the Earth.

In marine biology, plankton is an important part of the marine ecosystem.