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| Q. |
Ozone hole refers to… AFMC2001 |
| A. | Reduction in thickness of ozone layer in troposphere |
| B. | Reduction in thickness of ozone layer in stratosphere |
| C. | Hole in ozone layer in stratosphere |
| D. | Increased concentration of ozone |
| Answer» C. Hole in ozone layer in stratosphere | |
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