MCQOPTIONS
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MCQOPTIONS
| 1. |
Q: Ozone hole refers to which |
| A. | hole in ozone layer |
| B. | decrease in the ozone layer in troposphere |
| C. | decrease in thickness of ozone layer in stratosphere |
| D. | increase in the thickness of ozone layer in troposphere |
| Answer» D. increase in the thickness of ozone layer in troposphere | |