Answer: Ultraviolet Radiation
Explanation: Ultraviolet Radiation is the kind of electromagnetic radiation having wavelength in the range of 10 nm to 400 nm. It is shorter than the visible light.
The prime and major source of these radiations is the Sun. These radiations have some advantages as well as these are used for the security purposes but these advantages are negated with the impact they have on living beings.
These radiations attacks directly the DNA of the cells of the skin and can cause fatal and an incurable disease like cancer.