Ans. The international community has taken several measures to address ozone depletion. The most significant step was the adoption of the Montreal Protocol on Substances that Deplete the Ozone Layer in 1987. This agreement aimed to phase out the production and consumption of ozone-depleting substances (ODS) such as chlorofluorocarbons (CFCs) and halons. The protocol has been ratified by almost all countries, resulting in a significant reduction in the use of ODS and a gradual recovery of the ozone layer. Additionally, research and monitoring programs have been established to track the ozone layer's recovery and assess the effectiveness of the protocol's measures.