3. the ultraviolet UVC radiation short C is the wave length 100 to 290 nm. This type of radiation is not down to the Earth's surface due to absorbed in the o zone layer of the atmosphere, o zone UVC filter is it was not able to pass through the surface world. But some areas have reduced o zone UV light might pass down into the Earth has more surface area. UVB and UVA to receive too much will increase the risk of skin cancer.