Today, the fossil record
A)can be dated only with one layer in relation to older layers below and younger layers above, no actual dates can be estimated.
B)can be dated reasonably well only with uranium-238.
C)can be dated reasonably well using a variety of radioactive isotopes with known half-lives.
D)can be dated precisely, to within a single year, using radioactive isotopes.

Question

Quizplus · Accepted Answer

The fossil record can be dated reasonably well using a variety of radioactive isotopes with known half-lives, which allows for estimating the age of fossils and rocks.

Today, the Fossil Record