What is ozone hole? When was it first noticed? Name the unit of measurement of quantity of ozone present at a particular region of the atmosphere.
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The term 'ozone hole' refers to the depletion of the protective ozone layer in the upper atmosphere (stratosphere) over Earth's polar regions.
It was First noticed on May 16, 1985
In the scientific journal Nature on May 16, 1985, three scientists from the British Antarctic Survey announce their detection of abnormally low levels of ozone over the South Pole.
Dobson Unit
The Dobson Unit is a way to describe how much ozone there would be in a particular region of the atmosphere.
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