Destruction of the Ozone Layer
There is much concern about the destruction of the ozone layer because it protects all organisms from the damage that can be caused by the ultraviolet (UV) rays. The ozone gas in the upper parts of the atmosphere performs an essential role, screening out 99% of the UV rays. ... Ozone is both formed and destroyed by the sun’s radiation. In the past, the amount of ozone in the upper atmosphere has remained fairly constant.