Invertebrates are a type of creature without a skeleton.

Molecular biology is a field of study that understands life phenomena at the molecular level.

Biotechnology plays a very important role in the medical field.

I am majoring in developmental biology at university.

Coelenterates are said to be the first animals with a true body cavity.

His tribe has been practicing zoolatry since ancient times.

He is studying about ancient animal worship.

Chrysophyta perform photosynthesis underwater.

Chrysophyta are living in this pond.

He is an expert in nuclear physics.