He is devoted to the study of neoplasms.

There are only inanimate objects in this room.

The use of bioweapons is prohibited by international law.

My biological clock is disrupted, and I've been having sleepless nights.

Invasive species can have a major impact on the natural environment.

He is an expert in oceanography.

Part of this movie is based on actual events.

Health is very important.

His opinion is very important.

When it becomes summer vacation, I go swimming almost every day.