Japanese is a language with few declensions.

He believes in psychic phenomena.

He fell into a state of lethargy after the exam.

Hydrocarbons are fundamental components of organic chemistry.

Calcium carbide is a major raw material for acetylene gas.

The existence of dark matter has not yet been fully proven.

Antibiotics don't work for colds, so please don't take them unnecessarily.

It is said that antimatter has properties opposite to those of matter.

This food may contain carcinogens.

The air in this area is greatly affected by pollutants emitted from factories.