| Keyword | CPC | PCC | Volume | Score | Length of keyword |
|---|---|---|---|---|---|
| composition of the atmosphere over time | 1.5 | 1 | 8999 | 70 | 39 |
| composition | 0.18 | 0.3 | 4889 | 21 | 11 |
| of | 0.56 | 0.5 | 1913 | 95 | 2 |
| the | 0.4 | 0.2 | 4560 | 27 | 3 |
| atmosphere | 1.13 | 0.8 | 2123 | 71 | 10 |
| over | 1.51 | 0.4 | 6284 | 93 | 4 |
| time | 1.19 | 0.6 | 8630 | 34 | 4 |
| Keyword | CPC | PCC | Volume | Score |
|---|---|---|---|---|
| composition of the atmosphere over time | 1.7 | 0.3 | 5802 | 69 |
