My diet is rich in protein.

The lens of this camera is easy to attach and remove.

He always plays minor parts in the theater company.

I want to eat a beef bowl.

My friend is suffering from herpes simplex.

Fluoromethane plays an important role in chemical reactions.

Difluoromethane is widely used as a refrigerant.

Chloromethane is often used in organic chemistry experiments.

Cyclopentane is a compound often used in organic chemistry.

Cyclooctane plays an important role in organic chemistry.