Answer: Ozone layer
Notes: The Montreal Protocol on Substances that Deplete the Ozone Layer was designed to reduce the production and consumption of ozone depleting substances in order to reduce their abundance in the atmosphere, and thereby protect the earth’s fragile ozone Layer. The original Montreal Protocol was agreed on 16 September 1987 and entered into force on 1 January 1989. In 1995, the United Nations named September 16 the International Day for the Protection of the Ozone Layer, also known as World Ozone Day.
This Question is Also Available in:
हिन्दी