| Keyword | CPC | PCC | Volume | Score |
|---|---|---|---|---|
| what time period did humans appear | 1.61 | 0.8 | 6473 | 13 |
| what time period did humans first appear | 0.22 | 0.8 | 1818 | 83 |
| when did humans first appear time period | 0.66 | 0.9 | 8847 | 12 |
| what era did the first humans appear | 0.11 | 0.3 | 7920 | 19 |
| how long ago did humans appear | 0.93 | 0.7 | 144 | 59 |
| during which period did modern humans arise | 0.07 | 1 | 6776 | 92 |
| what period were humans created | 1.15 | 0.2 | 6207 | 5 |
| when did humans appear | 0.34 | 0.5 | 8146 | 53 |
| humans first appeared during which period | 0.61 | 0.2 | 4173 | 6 |
