A tardigrade can survive in extreme environments.

Ruminants have the characteristic of re-chewing food after swallowing it once.

He is an expert in theoretical physics.

The ejecta from the volcano plays an important role in shaping the terrain.

My pet is a dog.

The study of organic compounds is an important field in chemistry.

This inorganic compound plays an important role in chemical reactions.

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

He is very interested in paleontology.

I am majoring in biochemistry at university.