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

I am very interested in marine biology.

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

According to the law on specified alien species, the import of certain organisms is prohibited.

In linear algebra, the upper triangular matrix plays a very important role.

The grammar of 'Jou-nidan' is an important part in learning Japanese.

My room is on the upper level.

This handover is our new project.

His efforts finally brought about a spectacular result.

He is doing special exercises to strengthen his supraspinatus muscle.