| Keyword | CPC | PCC | Volume | Score | Length of keyword |
|---|---|---|---|---|---|
| control group in environmental science | 1.87 | 0.4 | 5280 | 6 | 38 |
| control | 1.45 | 0.5 | 7980 | 82 | 7 |
| group | 0.6 | 0.8 | 1414 | 34 | 5 |
| in | 1.94 | 0.3 | 8206 | 23 | 2 |
| environmental | 0.51 | 0.2 | 7566 | 2 | 13 |
| science | 1.12 | 0.4 | 3928 | 95 | 7 |
| Keyword | CPC | PCC | Volume | Score |
|---|---|---|---|---|
| control group in environmental science | 0.81 | 1 | 4989 | 1 |
