He is majoring in petrology at university.

This cigarette contains carcinogens.

I used binoculars to observe birds in the mountains.

It is said that this substance has a high carcinogenicity.

He was observing the distant birds using binoculars.

This area is rich in peridotite.

This mountain is made of tuff.

Phoenix is one of the constellations in the southern hemisphere.

You can use spectroscopy to examine the components of a substance.

When he opened the supernatural box, an astonishing power was released.