Protists are single-celled organisms that live in water.

He is majoring in zoology at university.

This building has existed for centuries.

He believes in the philosophy of materialism.

This animal is a protected species, so you must never touch it.

I am majoring in biology at university.

Carbohydrates are important as a source of energy.

His painting is very good at model drawing.

He has a full-size model of a dinosaur in his room.

I prefer cash transactions.