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

Acidic oxides react with water to produce acids.

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

The use of bioweapons is prohibited by international law.

Papa Bush was the 41st president of the United States.

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

Protozoans are single-celled organisms.

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

He is a world-famous physicist.

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