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.

Carbohydrates are important as a source of energy.

I prefer cash transactions.