Taxonomy is the science of finding, understanding, and naming species of organisms.

I love biology.

He ate one apple.

In this library, books are classified by genre.

He categorized the books by genre.

What is the unit of measure for this product's weight?

He is known as a person with learning.

Her dress was a vivid lemon color, and it stood out.

I am majoring in microbiology at university.

Astrobiology is a very interesting field of study.