What is the purpose of the ozone layer?

The ozone layer, located in the stratosphere, plays a crucial role in protecting life on Earth by absorbing and blocking the majority of the Sun’s harmful ultraviolet (UV) radiation. Without the ozone layer, exposure to UV radiation would increase significantly, leading to higher rates of skin cancer, cataracts, and other health issues. The ozone layer also helps to protect ecosystems, particularly marine life and crops, from the damaging effects of UV rays. Efforts to reduce the depletion of the ozone layer, such as the Montreal Protocol, have been successful in reducing harmful chemicals like CFCs.