The Atlantic humpback dolphin is designated as an endangered species.

The Chinese white dolphin lives in the waters off the southern coast of China.

I will make homemade tortelloni tonight.

The Chontaduro tree is reputed to have delicious fruit.

He is studying the shape of a tetrahemihexahedron.

My younger sister is in her early teens and goes to junior high school.

Fluoromethane plays an important role in chemical reactions.

Difluoromethane is widely used as a refrigerant.

Chloromethane is often used in organic chemistry experiments.

In this chemical reaction, cyclohexane is the main product.