What is the function of the ozone layer?

The ozone layer is a layer of ozone molecules (O₃) located in the Earth’s stratosphere that plays a crucial role in protecting life on Earth from harmful ultraviolet (UV) radiation. By absorbing most of the Sun’s dangerous UV rays, the ozone layer prevents these rays from reaching the Earth’s surface, where they could cause skin cancer, cataracts, and other health issues in humans, as well as harm ecosystems. The ozone layer is vital for life, and its depletion due to human-made chemicals has been a significant environmental concern.