The largest hole in the Ozone layer spreading over 1 million square kilometers above the Arctic has closed due to unusual atmospheric conditions. The hole in Ozone was first identified by scientists in_________? | MCQ Hive

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Q The largest hole in the Ozone layer spreading over 1 million square kilometers above the Arctic has closed due to unusual atmospheric conditions. The hole in Ozone was first identified by scientists in_________?

A A. February, 2020
B B. March,2020
C C. April,2020
D D. May,2020

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