I use the radio to listen to my favorite music in the mornings.

The radio presenter is hosting the morning program.

This radioactive substance can be harmful.

Radioactive decays are the transformation of unstable nuclei of radioactive substances.

Watching radioactive decay can be interesting.

Radioactive decay products can be harmful to the environment.

Radioactive decay is the process of spontaneous disintegration of the nucleus of a radioactive substance.

Radioactive decay is the transformation of an atom's nucleus by emitting radioactive particles.

Radioactive decay is the transformation of a stable isotope of a radioactive substance into another element through radioactive decay.

Radiologists diagnose patients by examining X-ray films.