My father went to Tokyo on a solo assignment.

We made a plan to explore the unexplored areas of Africa.

He likes to write short stories.

There are many words in English that are the same in singular and plural forms.

A unary operator operates on one operand.

Bile acids play an important role in breaking down fats in the body.

He is facing many difficulties due to gender identity disorder.

Biocentrism provides a new perspective for reevaluating the relationship between life and the universe.

My brother is a famous biologist.

The 120-cell is one of the regular polytopes in four dimensions.