The significance of the ozone layer in the atmosphere is its protective role against harmful ultraviolet (UV) radiation. The ozone layer, located in the stratosphere, absorbs a substantial amount of UV radiation from the sun, preventing it from reaching the Earth's surface. This shielding effect is crucial for safeguarding human health, as excessive UV exposure can lead to skin cancer, cataracts, and other health issues. Additionally, the ozone layer plays a vital role in maintaining ecosystem stability by protecting various species. Its depletion due to human-made chemicals like chlorofluorocarbons (CFCs) has raised international concern and led to global protective measures.