Protists are single-celled organisms that live in water.

I love biology.

Mineral oil is often used in the manufacture of cosmetics and pharmaceuticals.

He is majoring in mineralogy at university.

Vertebrates are organisms whose part of the skeleton is composed of a spine.

Wild animals are part of nature, and we should protect them.

He is majoring in zoology at university.

Arthropods are a large group of animals that include insects, spiders, and shrimp.

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

I am majoring in biology at university.