| Keyword | CPC | PCC | Volume | Score | Length of keyword |
|---|---|---|---|---|---|
| effects of pollution on respiratory system | 0.3 | 1 | 56 | 24 | 42 |
| effects | 1.51 | 0.3 | 1409 | 16 | 7 |
| of | 0.19 | 0.2 | 4802 | 43 | 2 |
| pollution | 1.6 | 0.3 | 3149 | 23 | 9 |
| on | 0.26 | 0.6 | 8397 | 15 | 2 |
| respiratory | 1.68 | 0.1 | 8217 | 12 | 11 |
| system | 0.82 | 1 | 6149 | 8 | 6 |
| Keyword | CPC | PCC | Volume | Score |
|---|---|---|---|---|
| effects of pollution on respiratory system | 1.63 | 0.1 | 6034 | 66 |
| air pollution effects on respiratory system | 1.4 | 0.9 | 1424 | 89 |
| effect of air pollution on respiratory system | 0.47 | 0.3 | 4566 | 20 |
| effect of air pollution on respiratory health | 0.33 | 0.5 | 2797 | 6 |
| pollution affects respiratory disorder | 0.59 | 0.5 | 6290 | 7 |
| effects of air pollution on lungs | 1.16 | 0.7 | 9532 | 6 |
| respiratory problems due to air pollution | 1.72 | 0.1 | 5646 | 18 |
| effects of air pollution on health | 1.59 | 0.8 | 8272 | 26 |
| respiratory problems caused by air pollution | 1.84 | 0.5 | 5875 | 84 |
| pulmonary health effects of air pollution | 0.99 | 0.8 | 9261 | 3 |
| particle pollution and respiratory effects | 1.13 | 0.5 | 3234 | 71 |
| respiratory issues caused by air pollution | 0.72 | 0.5 | 6985 | 47 |
| air pollution causes respiratory problems | 0.14 | 0.4 | 9687 | 3 |
| air pollution and respiratory health | 1.09 | 0.6 | 7985 | 74 |
| main health effects of air pollution | 0.04 | 0.1 | 7827 | 9 |
| effects of breathing polluted air | 0.72 | 0.4 | 7161 | 8 |
| effects of air pollution | 1.32 | 0.5 | 1942 | 2 |
| how does pollution affect the lungs | 1.82 | 0.1 | 5869 | 78 |
| how do pollutants affect respiration | 0.9 | 0.4 | 9870 | 31 |
