this layer of earth’s atmosphere contains the ozone layer that absorbs the sun’s ultraviolet rays.
Earth’s Atmosphere and Ozone Layer
Answer:
Earth’s atmosphere consists of several layers, with the ozone layer located in the stratosphere. This layer plays a crucial role in protecting life on Earth by absorbing the majority of the Sun’s harmful ultraviolet (UV) radiation.
The ozone layer, situated at an altitude of around 10 to 50 kilometers above Earth’s surface, is composed of ozone (O3) molecules. These molecules absorb much of the incoming UV-B and UV-C radiation from the Sun, preventing it from reaching the Earth’s surface in large amounts. This absorption process helps in shielding living organisms from the detrimental effects of excessive UV radiation, such as skin cancer, cataracts, and immune system suppression.
Over the years, human activities, especially the release of chlorofluorocarbons (CFCs), have led to ozone depletion, causing thinning of the ozone layer. The deterioration of the ozone layer has heightened concerns about increased exposure to harmful UV radiation and its impacts on human health, ecosystems, and the environment.
Efforts like the Montreal Protocol have been instrumental in regulating the production and use of ozone-depleting substances, aiming to allow the ozone layer to recover gradually. Protection of the ozone layer remains critical for maintaining a sustainable environment and ensuring the well-being of present and future generations.