The primary role of the Earth's ozone layer is to protect life on the planet by absorbing the majority of the sun’s harmful ultraviolet (UV) radiation. By filtering out significant levels of UV radiation, the ozone layer helps to prevent detrimental health effects such as skin cancer and cataracts in humans and reduces harmful impacts on terrestrial and aquatic ecosystems. This protective layer is situated in the stratosphere and plays an essential role in maintaining the ecological balance necessary for life. Monitoring and preserving the ozone layer is critical due to the increase of ozone-depleting substances.