| Keyword | CPC | PCC | Volume | Score |
|---|---|---|---|---|
| what time did humans appear | 0.37 | 0.6 | 9780 | 98 |
| what time period did humans appear | 1.46 | 0.9 | 2568 | 72 |
| when did humans first appear in geologic time | 1.29 | 0.4 | 8886 | 8 |
| what time period did humans first appear | 0.24 | 0.7 | 6065 | 30 |
| when did humans first appear time period | 0.08 | 0.5 | 2158 | 76 |
| what year did humans appear | 1.73 | 1 | 945 | 9 |
| what period did humans appear | 1.33 | 0.8 | 4351 | 13 |
| when did humans start to appear | 0.03 | 0.6 | 4554 | 60 |
| when did early humans appear | 0.44 | 0.9 | 877 | 94 |
| in what era did humans appear | 0.44 | 0.4 | 6238 | 91 |
| how long ago did humans appear | 1.83 | 0.3 | 2673 | 67 |
| when did modern day humans appear | 1.58 | 0.1 | 6786 | 69 |
| when did humans appear on earth | 0.5 | 0.7 | 6921 | 42 |
| when did modern humans appear | 0.9 | 0.5 | 7988 | 98 |
| when did humans first appear | 0.33 | 1 | 3962 | 8 |
| how long ago did modern humans appear | 0.14 | 0.6 | 1663 | 32 |
| when did actual humans first appear | 0.74 | 0.9 | 1157 | 73 |
| when did humans appeared on earth | 0.52 | 0.8 | 2030 | 42 |
| when did humans begin | 1.25 | 0.3 | 8674 | 81 |
| when did humans emerge | 0.06 | 0.3 | 173 | 30 |
| when humans first appeared | 1.2 | 0.4 | 9748 | 47 |
