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World Ozone DayWorld Ozone Day is observed on September 16 every year to spread awareness among people about the depletion of Ozone Layer. This year the slogan for World Ozone Day is 'Ozone For Life'. Ozone Layer DepletionThe Ozone layer reduces harmful UV radiation reaching the Earth's surface. The Ozone layer is present in Earth’s atmosphere (15-35km above Earth) in the lower portion of the stratosphere and has relatively high concentrations of ozone (O3). Ozone layer depletion is the gradual thinning of the earth’s ozone layer present in the upper atmosphere. Ozone depletion also consists of a much larger springtime decrease in stratospheric ozone around Earth's polar regions, which is referred to as the ozone hole. Cause of ozone depletionThe main cause of ozone depletion and the ozone hole is manufactured chemicals, especially manufactured halocarbon refrigerants, solvents, propellants, and foam- blowing agents (chlorofluorocarbons (CFCs), HCFCs, halons). Since the early 1970's, scientists observed reduction in stratospheric ozone and it was found more prominent in Polar Regions. ODS substances have a lifetime of about 100 years. Effects Of Ozone Layer DepletionThese are higher in the aquatic food chain. If the planktons declines, it would likely have wide-reaching effects for all marine life in the lower food chain. Solutions to Ozone Layer DepletionSubscribe to Business Standard PremiumExclusive Stories, Curated Newsletters, 26 years of Archives, E-paper, and more! First Published: Wed, September 16 2020. 19:08 IST What is the main cause of the ozone layer depletion?Ozone depletion occurs when chlorofluorocarbons (CFCs) and halons—gases formerly found in aerosol spray cans and refrigerants—are released into the atmosphere (see details below).
What are the two causes of ozone layer depletion Class 10?Two causes of ozone layer depletion : Ozone layer depletion occurs due to substances like Chlorofluorocarbons (CFCs) and hydro-chlorofluorocarbons (HCFCs). Volatile organic compounds (VOCs) also act on ozone layer.
What are the causes and effects of ozone layer?The main effect of ozone depletion is an increase in UV-B rays reaching the earth's surface. Causes : chlorofluorocarbon (CFCs), halons, and other compounds deplete the ozone layer. These chemicals are found in cleaning agents, aerosols, insulating foam, and refrigerants.
What are the causes of ozone?Ozone is formed when heat and sunlight cause chemical reactions between oxides of nitrogen (NOX ) and Volatile Organic Compounds (VOC), which are also known as Hydrocarbons. This reaction can occur both near the ground and high in the atmosphere.
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