The role of the ozone layer in protecting life on Earth is critical as it absorbs the majority of the sun's harmful ultraviolet (UV) radiation. Located in the stratosphere, this layer prevents excessive UV exposure, which can lead to skin cancer, cataracts, and other health issues in humans, as well as detrimental effects on ecosystems and wildlife. The ozone layer's preservation is vital for maintaining biodiversity and ensuring the overall health and stability of the planet's environments.