Question

what is the role of UNEP in ozone layer protection​

Answer 1

$\huge\mathfrak\green{Answer}$

UNEP took up the issue of ozone depletion in 1976 and adopted a simple but effective approach. ... This process led to the Vienna Convention for the Protection of the Ozone Layer in 1985 and the Montreal Protocol on Substances that Deplete the Ozone Layer in 1987.