There are several unwritten rules in this company.

He is looking for literature on that theme.

You can use a spectrometer to examine the composition of a substance.

Spectroscopy is an important means of investigating the properties of matter.

He strongly believes in the value of humanism.

Taxonomy is an important tool for understanding the diversity of life.

What is the sales percentage of this product?

Analytical chemistry is a science that reveals the composition and structure of substances.

He is majoring in humanities at university.

He has a deep interest in humanities.