He made three robots.

He exercises his body every day.

His body looks like that of an athlete.

The study of filterable pathogens is an important part of virology.

Electromagnetic radiation conveys energy in forms such as light and radio waves.

A cooling device utilizing the principle of radiative cooling has been developed.

He is receiving treatment for brain radiation.

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

Soil pollution in this area has become serious due to years of industrial activity.

Air pollution is having a serious impact on the health of the planet.