Ozone Layer Depletion – How the Large Hole in the Arctic Ozone Layer Closed

The U.N. World Meteorological Organization (WMO) recently declared that Ozone depletion over the Arctic though hit a "record level" in March (the biggest since 2011), the hole has now closed. The ozone hole’s closing was due to a phenomenon called the polar vortex, and not because of reduced pollution levels due to Covid-19 lockdowns around the world.
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