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mahendra online test registration  published this article page no 20 After it was found in 1985 the International Montreal Protocol was framed in 1987. It is the only protocol ratified at the United Nations that bans chlorine compounds in refrigerators and aerosols. Unfortunately the reason for the reduction of ozone hole is not the steps to reduce the usage of chlorine compounds. It is because of climate change. Climate Changea Reason Chlorine in air requires cold temperatures in stratosphere to form chemical clouds that actually react with ozone. The clouds now go away as they are being warmed up due to elevated temperatures. The temperatures were 29 degrees warmer than the average mahendra online test registration.


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