Environmentalmedium · Past Paper
The unit used to measure the thickness of the ozone layer is:
ADecibel
BDobson Unit (DU)
CPascal
DNanometer
✓ Correct Answer: B — Dobson Unit (DU)
One Dobson Unit is defined as the number of molecules of ozone that would be required to create a layer of pure ozone 0.01 millimeters thick.
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