The significance of the ozone layer for life on Earth is immense, as it serves as a protective shield against harmful ultraviolet (UV) radiation from the sun. This layer, located in the stratosphere, absorbs the majority of UV radiation, preventing it from reaching the Earth's surface, where it could cause dangerous effects like skin cancer, cataracts, and other health issues in living organisms. Furthermore, a healthy ozone layer helps maintain ecological balance by protecting various ecosystems, including marine life and plants, which are crucial for biodiversity and the stability of food chains.