He is an expert in astrophysics, and his research is highly valued around the world.

The agricultural products of this region are very fresh and delicious.

Drug abuse is having a serious impact as a social problem.

The use of bioweapons is prohibited by international law.

We have a responsibility to protect the biodiversity of the Earth.

Phytobenthos is an important part of the marine ecosystem.

The study of benthos is an important field in marine biology.

I love biology.

He is majoring in mineralogy at university.

Mineral oil is often used in the manufacture of cosmetics and pharmaceuticals.