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How do cfcs damage the ozone layer

Near the ground, ozone is an air pollutant that causes lung damage and asthma They were the first to find an ozone hole and it would later be identified as the Once in the atmosphere, CFCs drift slowly upward to the stratosphere, where. Our understanding of stratospheric ozone depletion has been obtained through a combination of are not reached in the Arctic, and significant ozone depletion does not occur. A single CFC molecule can destroy , ozone molecules. One of the elements that make up CFCs is chlorine. began in the late s after the first warnings of damage to stratospheric ozone were published.

How do natural gases and chemical substances, including nitrogen and chlorine, cause the depletion of the ozone layer? Here's everything. The advent of chlorofluorocarbons, or CFCs, threatened the ozone layer and the survival of Earth dwellers. Manufacturers thought the. Ozone near the ground is a pollutant, but in the upper stratosphere, it forms a protective layer around the planet that absorbs ultraviolet sunlight.

CFCs have a lifetime of about 20 to years, and consequently one free chlorine atom from a CFC molecule can do a lot of damage, destroying ozone. Chlorofluorocarbons (CFCs), hydrochlorofluorocarbons (HCFCs) and halons destroy the earth's protective ozone layer, which shields the earth from harmful. The use or CFCs was phased out by the Montreal Protocol on Substances that Deplete the Ozone Layer, an international agreement signed in Damaging ozone. It is the chlorine atoms in CFCs that destroy ozone in the stratosphere (upper atmosphere). There are three main steps in this process.

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