The continental slope is a part of the seafloor topography, connecting the continental shelf and the deep sea floor.

The SI system is a standard unit system used worldwide.

He is a world-renowned ichthyologist.

I use a tram for commuting every day.

My brother is a famous biologist.

Ri is wearing black clothes.

He is an expert in primatology and is engaged in the study of gorilla behavior.

I have been to Salt Lake City.

He is studying hard every day.

He found forensic evidence.