How could a hole in the ozone layer affect humans?

There's a lot of things that a hole in the ozone layer could effect humans like how the hole could let in UV rays (ultra violent rays) from the sun these rays cause skin cancer, eye cataracts and immune deficiency disorders.

atomic number of carbon is 6

electronic configuration of carbon is 1s²2s²2p²

orbital diagram of c is as shown here in the image.