| Keyword | CPC | PCC | Volume | Score | Length of keyword |
|---|---|---|---|---|---|
| concentration gradient for diffusion | 1.89 | 0.5 | 521 | 46 | 36 |
| concentration | 1.95 | 0.6 | 6040 | 83 | 13 |
| gradient | 1.29 | 0.8 | 449 | 38 | 8 |
| for | 0.63 | 0.9 | 28 | 77 | 3 |
| diffusion | 1.24 | 0.7 | 4469 | 69 | 9 |
| Keyword | CPC | PCC | Volume | Score |
|---|---|---|---|---|
| concentration gradient for diffusion | 1.11 | 1 | 8878 | 55 |
