Organic solvents play an important role in chemical reactions.

The government is considering the introduction of a carbon tax.

I like talking with my friends in private calls.

I ate one apple.

I ate one apple.

This individual is a very rare type of butterfly.

Saturated fatty acids may increase the risk of heart disease.

This compound is an unsaturated hydrocarbon.

Calcium carbide is a major raw material for acetylene gas.

This nuclear reactor is designed to be very safe.