| Keyword | CPC | PCC | Volume | Score | Length of keyword |
|---|---|---|---|---|---|
| coal pollution usa | 1.81 | 0.4 | 8483 | 12 | 18 |
| coal | 0.1 | 0.3 | 65 | 55 | 4 |
| pollution | 0.33 | 0.5 | 9296 | 39 | 9 |
| usa | 0.27 | 0.1 | 6899 | 54 | 3 |
| Keyword | CPC | PCC | Volume | Score |
|---|---|---|---|---|
| coal pollution usa | 1.57 | 0.2 | 8084 | 52 |
| effects of coal usage on air pollution | 0.63 | 0.2 | 7805 | 70 |
