SSC GD 2019 PYQ — Question 42

The correct answer is option 3 i.e. poles

• The presence of Ozone depleting substances like halocarbon refrigerants, chlorofluorocarbons, solvents, and propellants etc, in combination with extreme weather conditions like prolonged cold and strong winds in the stratosphere over the Antarctic and the Arctic areas causes chemical reactions which depletes or destroys the ozone layer of the poles at a faster rate.
• The presence of polar ozone holes can be observed over the Antarctic and the Arctic areas. These polar ozone holes are areas of lower concentration of stratospheric ozone caused due to human activity.