| Keyword | CPC | PCC | Volume | Score | Length of keyword |
|---|---|---|---|---|---|
| principles of systematic zoology | 1.24 | 0.1 | 818 | 3 | 32 |
| principles | 1.62 | 0.3 | 1247 | 52 | 10 |
| of | 0.54 | 0.7 | 6083 | 19 | 2 |
| systematic | 0.47 | 0.1 | 3257 | 75 | 10 |
| zoology | 0.59 | 1 | 1754 | 67 | 7 |
| Keyword | CPC | PCC | Volume | Score |
|---|---|---|---|---|
| principles of systematic zoology | 1.53 | 0.5 | 8526 | 7 |
