Keyword | CPC | PCC | Volume | Score |
---|---|---|---|---|
how old are the fossils in section b above | 1.74 | 0.1 | 7434 | 55 |
how old are fossils | 1.51 | 0.9 | 3942 | 27 |
how old are fossils found | 1.48 | 0.4 | 626 | 11 |
how old are the earliest known fossils | 0.26 | 0.6 | 4134 | 27 |
how to identify the age of fossils | 0.67 | 0.8 | 2283 | 37 |
how to determine the age of fossils | 1.96 | 0.6 | 1002 | 78 |
relative age of fossils | 0.71 | 0.1 | 4038 | 32 |
over time what is found in fossils | 1.13 | 0.6 | 8273 | 74 |
determining the age of fossils | 0.91 | 0.3 | 1677 | 18 |
the age determination of fossils | 0.38 | 0.9 | 4769 | 57 |
fossils a guide to prehistoric life | 0.41 | 0.7 | 3624 | 22 |
older fossils appear in rock layers | 0.08 | 0.3 | 7846 | 70 |
relative age and index fossils | 1.19 | 0.9 | 5616 | 9 |
age of oldest fossils | 0.04 | 0.4 | 7287 | 54 |
age of fossils can be determined by | 1.46 | 0.5 | 1533 | 6 |