What does Ozone hole refer 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

Correct Answer : decrease in the ozone layer in troposphere
Question Asked : Bihar Police Sub Inspector Prelims Exam 2018
Explanation : The ozone hole refers to the seasonal depletion of ozone molecules in the lower stratosphere above Antarctica. This layer of 'good ozone' near the top of the atmosphere acts as a shield, filtering out most of the ultraviolet light from the Sun that could otherwise prove deadly to people, animals and plants.
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