| Keyword | CPC | PCC | Volume | Score | Length of keyword |
|---|---|---|---|---|---|
| oxygen activation and oxygen toxicity | 1.4 | 0.9 | 2082 | 6 | 37 |
| oxygen | 1.5 | 0.2 | 861 | 26 | 6 |
| activation | 0.8 | 1 | 27 | 67 | 10 |
| and | 1.04 | 0.1 | 8418 | 90 | 3 |
| oxygen | 1.5 | 0.3 | 7146 | 76 | 6 |
| toxicity | 1.39 | 1 | 5661 | 37 | 8 |
| Keyword | CPC | PCC | Volume | Score |
|---|---|---|---|---|
| oxygen activation and oxygen toxicity | 0.84 | 0.1 | 6251 | 2 |
