Ozone is a molecule composed of three oxygen atoms (O3). It is present in the Earth's atmosphere, particularly in the stratosphere, where it forms the ozone layer. The ozone layer plays a crucial role in protecting life on Earth by absorbing most of the sun's ultraviolet (UV) radiation. This absorption prevents a significant amount of harmful UV radiation from reaching the Earth's surface, there by reducing the risk of skin cancer, cataracts, and other health issues in humans, as well as protecting ecosystems and agricultural productivity. Additionally, ozone also plays a role in the lower atmosphere (troposphere) as a pollutant and greenhouse gas, where it contributes to both air quality issues and climate change. Overall, ozone is essential for maintaining the balance of life-sustaining conditions on Earth.
