When is World Ozone Day 2021 observed?

A. September 14th

B. September 15th

C. September 16th 

D. September 17th

Explanation:

World Ozone Day 2021, the International Day dedicated for the Preservation of the Ozone Layer is observed every year on September 16. The day is observed as a reminder of the Spring of 1975 when the scientists in Antarctica had detected an appalling drop in the Ozone concentration.

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