Erebus is the god of darkness and chaos in Greek mythology.

It is known that passive smoking has a negative impact on health.

He is dedicated to the study of immunochemistry.

Homo erectus is considered one of the ancestors of mankind.

He swore to protect that secret even at the cost of his life.

He decided to change his character.

His existence is important to me.

He was abusing his power.

I went to the market accompanied by my mother.

The tree is the biggest tree in the park.