| Keyword | CPC | PCC | Volume | Score | Length of keyword |
|---|---|---|---|---|---|
| what is oxygen used for in respiration | 1.07 | 0.2 | 8768 | 33 | 38 |
| what | 0.75 | 0.3 | 186 | 7 | 4 |
| is | 0.57 | 0.2 | 4217 | 10 | 2 |
| oxygen | 1.8 | 0.2 | 9106 | 64 | 6 |
| used | 0.5 | 0.2 | 9771 | 63 | 4 |
| for | 0.13 | 0.7 | 2484 | 34 | 3 |
| in | 0.04 | 0.9 | 1023 | 85 | 2 |
| respiration | 1.33 | 0.8 | 6361 | 53 | 11 |
| Keyword | CPC | PCC | Volume | Score |
|---|---|---|---|---|
| what is oxygen used for in respiration | 1.13 | 0.5 | 490 | 19 |
