| Keyword | CPC | PCC | Volume | Score | Length of keyword |
|---|---|---|---|---|---|
| atmosphere composition earth history | 2 | 0.4 | 8687 | 24 | 36 |
| atmosphere | 1.87 | 0.5 | 5044 | 55 | 10 |
| composition | 0.21 | 1 | 1075 | 86 | 11 |
| earth | 0.14 | 0.1 | 1828 | 100 | 5 |
| history | 1.01 | 0.6 | 7945 | 45 | 7 |
| Keyword | CPC | PCC | Volume | Score |
|---|---|---|---|---|
| atmosphere composition earth history | 0.24 | 0.3 | 4699 | 27 |
| early earth atmosphere composition | 1.26 | 0.6 | 9988 | 8 |
| composition of earth's early atmosphere | 1.22 | 0.7 | 9551 | 2 |
| history of earth atmosphere | 0.9 | 0.8 | 4683 | 57 |
| atmosphere of earth composition | 1.96 | 0.5 | 5724 | 98 |
| atmosphere composition earth facts | 1.62 | 0.7 | 767 | 66 |
| original atmosphere of earth | 0.92 | 0.6 | 7237 | 64 |
| the composition of the early atmosphere | 0.58 | 0.3 | 8909 | 2 |
| the earth's atmosphere composition | 1.29 | 0.6 | 9608 | 77 |
| what was earth's early atmosphere composed of | 1.26 | 0.5 | 4168 | 20 |
| what was the early atmosphere composed of | 1.35 | 0.7 | 1582 | 1 |
