why there is the ozone hole over Antarctica though no one lives their
Answers
Answer:
ozon layer occur because of the special atmospheric and chemical condition that exists there but not anywhere else
Answer:
Ozone holes are more apparent in the region of Antarctica. They are formed as a result of an increased concentration of chlorine in the atmosphere. The release of chlorine is mainly from Chlorofluorocarbons (CFCs) which is extensively used as a refrigerant. The CFCs migrate from different layers of the atmosphere – troposphere to stratosphere, where chlorine atoms are released by the action of UV radiations on them. Liberation of chlorine atoms leads to the conversion of ozone into molecular oxygen. One chlorine atom can destruct 10,000 ozone molecules, causing ozone depletion. Ozone hole formation will result in an increased concentration of UV-B radiations on the surface of earth. The UV – B is known to damage DNA, activating the process of skin ageing. Also, it causes darkening of skin and skin cancer. In humans, high levels of UV-B causes corneal cataract.