What does the ozone layer do?

The ozone layer plays a crucial role in protecting life on Earth by absorbing a significant amount of the sun's harmful ultraviolet (UV) radiation. This layer is primarily located in the stratosphere, about 10 to 30 miles above the Earth’s surface, where ozone (O₃) molecules are concentrated. The absorption of UV radiation by the ozone layer filters out much of the sun's most harmful rays, which can cause skin cancer, cataracts, and other health issues in humans, as well as harmful effects on animals and ecosystems.

By protecting against ultraviolet radiation, the ozone layer serves as a shield, allowing only the necessary and less harmful portions of sunlight to reach the Earth's surface. This protective function is vital for maintaining a stable and safe environment for living organisms.