| Keyword | CPC | PCC | Volume | Score | Length of keyword |
|---|---|---|---|---|---|
| ozone layer definition biology | 1.8 | 0.7 | 6636 | 22 | 30 |
| ozone | 1.58 | 0.6 | 8251 | 25 | 5 |
| layer | 0.82 | 0.5 | 7397 | 49 | 5 |
| definition | 0.29 | 0.3 | 3485 | 82 | 10 |
| biology | 1.95 | 0.6 | 3124 | 12 | 7 |
| Keyword | CPC | PCC | Volume | Score |
|---|---|---|---|---|
| ozone layer definition biology | 1.06 | 0.6 | 966 | 2 |
