The use of bioweapons is prohibited by international law.

The study of nekton is an important part of marine biology.

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 learning Ancient Greek language.

I have been to Kagoshima.

Have you ever seen a wildebeest in the savannah?

Yesterday, I played Hana-awase with my friends and I was able to collect Inoshikacho.

I am majoring in microbiology at university.

Astrobiology is a very interesting field of study.