Question

chudail ! agr tum heart attack s bachna chahti ho to tum apna dil mujhe de do .bhut care care krunga !​

Answer 1

Answer:

1974: Chemists in the USA discover the link between CFCs and the breakdown of ozone in the stratosphere

1985: British scientists publish results of abnormally low ozone concentrations above the Antarctic

1985: Vienna Convention for the Protection of the Ozone Layer agreed

1987: Montreal Protocol on Substances that Deplete the Ozone Layer agreed

1989: Ozone Protection and Synthetic Greenhouse Gas Management Act commenced in Australia

1991: Phase out of CFCs (chlorofluorocarbons) begins

1996: Phase out of HCFCs (hydrochlorofluorocarbons) begins