| Keyword | CPC | PCC | Volume | Score |
|---|---|---|---|---|
| how old is life on earth | 0.38 | 1 | 5366 | 50 |
| how old is life on earth estimated to be | 0.86 | 0.6 | 7388 | 87 |
| how old is life on earth wiki | 1.75 | 1 | 3759 | 23 |
| how old is life on earth according to science | 0.24 | 0.5 | 7472 | 73 |
| how old is human life on earth | 0.62 | 0.7 | 8086 | 78 |
| how old is the earth and life on it | 1.16 | 0.1 | 6571 | 4 |
| how old was the earth when life began | 1.27 | 0.4 | 950 | 28 |
| how old is the first life on earth | 1.67 | 1 | 6443 | 74 |
| how old was earth when life first appeared | 1.86 | 0.4 | 5773 | 22 |
| how old is earth estimated to be | 0.9 | 0.2 | 5998 | 38 |
| age of life on earth in years | 1 | 0.2 | 1243 | 39 |
| age of life on earth | 0.6 | 0.7 | 2460 | 29 |
| on average earth is how old | 1.39 | 0.8 | 9961 | 46 |
| the earth is about how old | 1.86 | 0.2 | 737 | 10 |
| what is estimated age of the earth | 0.97 | 0.4 | 8991 | 1 |
| life of earth in years | 1.76 | 0.1 | 2967 | 52 |
