| Keyword | CPC | PCC | Volume | Score | Length of keyword |
|---|---|---|---|---|---|
| arthropods circulatory system | 1.08 | 0.6 | 2748 | 69 | 29 |
| arthropods | 1.69 | 0.4 | 1171 | 62 | 10 |
| circulatory | 0.93 | 0.7 | 7434 | 17 | 11 |
| system | 1.48 | 0.5 | 9107 | 51 | 6 |
| Keyword | CPC | PCC | Volume | Score |
|---|---|---|---|---|
| arthropods circulatory system | 1.53 | 0.9 | 7285 | 86 |
| arthropod circulatory system open or closed | 0.56 | 0.8 | 1878 | 8 |
| do arthropods have an open circulatory system | 0.27 | 0.2 | 7825 | 33 |
| arthropods have open circulatory system | 0.65 | 0.2 | 8033 | 5 |
| what is the circulatory system of arthropods | 0.8 | 0.8 | 2062 | 37 |
| arthropods have a closed circulatory system | 0.41 | 0.3 | 4835 | 99 |
| do arthropods have a circulatory system | 1.44 | 0.6 | 2473 | 83 |
