The first estimate of the age of our planet was that of

Ais a landform that is formed at the mouth of a river from the deposition of sediment carried by the river as the water flows.

Error analysis: what might be the reason that some of your percentages didn't exactly match your predicted results? gametes aren't responsible for inheritance. mice don't have large litters, so the sample size was not large enough. the wrong type of mice were used.

How are fossils used to date organisms?