His research is drawing society's attention to environmental issues.

Chimpanzees are very intelligent animals.

I add a little black pepper to the soup.

I like to add black pepper to the soup.

I like to add black pepper to the soup.

He terrified people by using black magic.

He has a black belt in karate.

It is said that terrifying creatures live in that dark forest.

His heart seemed as dark as pitch.

I drink black vinegar every day for my health.