| Keyword | CPC | PCC | Volume | Score | Length of keyword |
|---|---|---|---|---|---|
| arthropods have open circulatory system | 1.06 | 0.7 | 7948 | 14 | 39 |
| arthropods | 0.7 | 1 | 9870 | 3 | 10 |
| have | 0.64 | 1 | 6704 | 6 | 4 |
| open | 0.59 | 0.6 | 6383 | 64 | 4 |
| circulatory | 0.4 | 0.4 | 2436 | 65 | 11 |
| system | 0.96 | 0.3 | 6439 | 12 | 6 |
| Keyword | CPC | PCC | Volume | Score |
|---|---|---|---|---|
| arthropods have open circulatory system | 0.9 | 0.1 | 4191 | 12 |
| do arthropods have an open circulatory system | 0.88 | 0.6 | 8181 | 31 |
| open circulatory system in arthropods | 0.41 | 0.9 | 6326 | 10 |
| arthropods possess an open circulatory system | 0.83 | 0.6 | 569 | 16 |
| arthropods open circulatory system | 1.93 | 1 | 2617 | 36 |
