His opinion is very important.

This is an organic vegetable.

Carbonization is a type of chemical reaction where organic matter changes under high temperatures and in a state of oxygen deficiency, turning into a substance with carbon as its main component.

When this wood is carbonized, its strength increases.

He is working in the information system field.

He is majoring in chemistry at university.

Hydrogen is the most abundant element in the universe.

He is an expert in chemistry.

He received the letter challenging him to a duel and began preparing for the duel.

He is a carnivorous man, being aggressive in relationships.