My hobby is making plastic models.

We should seriously consider the issue of plastic waste.

We need to enhance recycling to solve the problem of plastic waste.

He is an expert in chemistry.

The manufacturing industry occupies an important part of the economy.

We are considering introducing a new production line.

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.