What is the significance of the ozone layer?

The significance of the ozone layer lies in its crucial role in protecting life on Earth by absorbing and blocking the majority of the sun's harmful ultraviolet (UV) radiation. This protective function is vital because excessive UV radiation can lead to severe biological consequences, including skin cancers, cataracts, and other detrimental effects on human health, as well as harmful impacts on ecosystems, including plant and marine life.

The ozone layer exists in the Earth's stratosphere and is composed primarily of ozone (O3) molecules. While it does not directly influence climate or the greenhouse effect, nor does it regulate global temperatures or significantly contribute to photosynthesis, its ability to filter UV radiation is fundamental for maintaining the delicate balance of life on our planet. This makes the health and integrity of the ozone layer essential for the sustainability of ecosystems and human health, emphasizing its protective significance.