2. Ozone hole refers to A.hole in ozone layer B.decrease in the ozone layer in troposphere C.decrease in thickness of ozone layer in stratosphere D.increase in the thickness of ozone layer in troposphere
Answer: Option C Solution: The term 'ozone hole' refers to the depletion of the protective ozone layer in the upper atmosphere (stratosphere) over Earth's polar regions. Stratospheric ozone is constantly produced by the action of the sun's ultraviolet radiation on oxygen molecules (known as photochemical reactions).
