| Keyword | CPC | PCC | Volume | Score | Length of keyword |
|---|---|---|---|---|---|
| formaldehyde mechanism of toxicity | 0.08 | 0.8 | 7768 | 100 | 34 |
| formaldehyde | 1.35 | 0.4 | 9719 | 71 | 12 |
| mechanism | 0.47 | 1 | 6388 | 82 | 9 |
| of | 1.28 | 0.6 | 5065 | 22 | 2 |
| toxicity | 1.64 | 0.2 | 4587 | 38 | 8 |
| Keyword | CPC | PCC | Volume | Score |
|---|---|---|---|---|
| formaldehyde mechanism of toxicity | 1.43 | 0.3 | 4866 | 89 |
