| Keyword | CPC | PCC | Volume | Score |
|---|---|---|---|---|
| why do we need to know how old the earth is | 0.37 | 0.7 | 5401 | 99 |
| how do we know the earth's age | 1.28 | 1 | 7305 | 96 |
| how old do you think earth is | 1.36 | 0.1 | 8717 | 98 |
| how old is earth according to science | 0.89 | 0.2 | 3753 | 76 |
| how old do scientists believe earth is | 1.31 | 0.5 | 7053 | 98 |
| according to astronomers how old is earth | 0.03 | 0.3 | 3689 | 81 |
| how old is earth explain | 0.77 | 0.1 | 812 | 81 |
| how was the age of earth determined | 0.65 | 0.7 | 7481 | 42 |
| how was the earth's age determined | 1.57 | 0.5 | 5418 | 20 |
| how did scientists determine earth's age | 0.32 | 0.5 | 8278 | 22 |
| how to determine age of earth | 0.57 | 0.5 | 2944 | 83 |
| evidence for the age of the earth | 1.81 | 0.5 | 9756 | 37 |
| how scientists estimate the age of earth | 1.86 | 0.9 | 8634 | 14 |
| our earth age according to science | 1.93 | 0.7 | 2787 | 84 |
| age of the earth facts | 0.2 | 0.1 | 183 | 13 |
| how scientists estimate earth's age | 0.56 | 1 | 4098 | 13 |
