Question

why ozone holes have formed in the ozonosphere​

Answer 1

Many people have heard that the ozone hole is caused by chemicals called CFCs, short for chlorofluorocarbons. CFCs escape into the atmosphere from refrigeration and propellant devices and processes. ... In the stratosphere, ultraviolet light breaks the bond holding chlorine atoms (Cl) to the CFC molecule.

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Answer 2

Answer:

because of the emissions of chloroflurocarbons which are the main cause of depletion of the ozone layer.