| ozone hole upsc | 0.41 | 0.8 | 8053 | 15 | 18 |
| ozone hole shrinking upsc | 1.71 | 0.2 | 2212 | 25 | 53 |
| ozone layer depletion and ozone hole upsc | 0.29 | 0.8 | 2598 | 41 | 42 |
| ozone hole antarctica upsc | 0.3 | 0.4 | 1502 | 26 | 95 |
| antarctic ozone hole upsc | 1.33 | 1 | 4088 | 25 | 29 |
| tropical ozone hole upsc | 1.38 | 0.4 | 8130 | 24 | 59 |
| ozone hole recovery upsc | 1.74 | 0.8 | 9023 | 24 | 33 |
| is the ozone hole shrinking | 1.86 | 0.9 | 2636 | 27 | 91 |
| ozone hole in antarctica upsc | 1.06 | 0.2 | 8901 | 29 | 40 |
| has the ozone hole shrunk | 0.47 | 0.9 | 5503 | 25 | 30 |
| new hole in ozone | 0.4 | 0.4 | 6849 | 17 | 47 |
| ozone hole over time | 0.77 | 0.6 | 8644 | 20 | 57 |
| ozone hole and cfcs | 1.74 | 0.4 | 7648 | 19 | 45 |
| ozone layer hole closing | 1.9 | 0.7 | 8054 | 24 | 72 |
| ozone hole size over time | 0.2 | 0.5 | 9698 | 25 | 49 |
| ozone layer hole closed | 1.85 | 0.4 | 1938 | 23 | 4 |
| ozone layer depletion upsc | 1.62 | 1 | 8515 | 26 | 46 |
| current ozone layer hole | 0.45 | 1 | 3232 | 24 | 22 |
| ozone hole repairing itself | 0.5 | 0.7 | 1781 | 27 | 100 |
| ozone layer for upsc | 1.88 | 0.3 | 4079 | 20 | 75 |
| ozone hole climate change | 1.48 | 0.8 | 2080 | 25 | 6 |
