Basic oxides react with acids to produce salt and water.

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.

In this chemistry experiment, we will learn about the dangers of cyanide compounds.

He is a world-famous physicist.

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