I am majoring in developmental biology at university.

He is an expert in ecology.

What is this organism?

Myxomycetes are a branch of biology, and their ecology and biological characteristics are being studied.

Paleoecology is a field of study that investigates the relationship between past organisms and their environment.

He has a deep interest in archaeology.

He understands the importance of learning.

He is majoring in psychology.

Gaku is my best friend.

Microorganisms are one of the basic forms of life.