How can light from the sun cause skin cancer?

If to much UV radiation from the sun can damage the DNA in your skin cells and if enough damages your DNA and builds up it can cause cells to start growing out of control and can lead to skin cancer so thats how its cause.

A lot of Ultraviolet radiation from the sun can hurt the DNA in your skin cells. If the DNA is harmed to much over time, it can cause cells to grow too much, which can cause skin cancer.

the ozone layer acts as a filter for the shorter wavelength and highly hazardous ultraviolet radiation (uvr) from the sun, protecting life on earth from its potentially harmful effects. when the sky is clear, there is an inverse relationship between stratospheric ozone and solar uvr measured at the earth's surface.