Question : The ______ is the most common unit for measuring ozone concentration.
Option 1: Dobson unit
Option 2: chain
Option 3: rod
Option 4: statute mile
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Correct Answer: Dobson unit
Solution : The correct answer is the Dobson Unit .
The most widely used unit for calculating ozone levels is the Dobson Unit. The amount of ozone molecules needed to produce a layer of pure ozone that is 0.01 millimetres thick at 0 degrees Celsius and 1 atmosphere (the Earth's surface air pressure) is known as a Dobson Unit.
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