The harmful radiation emitted by the sun is

Ultraviolet radiation is the harmful part of sunlight, damaging skin cells and DNA.

Visible light is the harmless portion that we see and use for vision.

Infrared is felt as heat and is not the chief harmful ray.

Radio waves carry very low energy and pose no such danger.

The ozone layer absorbs most incoming ultraviolet before it reaches the ground.

Overexposure to ultraviolet can cause sunburn, ageing and skin cancer.