Unit Test — Unit test

Question 10 • CV Q4 M/J Science 3 Adv 2002110 Compacted Review of Grade.7.Life for SSA Prep

Compared to absolute dating, what is a disadvantage of relative dating?

Answer

Fossils must be in undisturbed rock layers to determine age.

Age, in years, cannot be determined for an individual fossil.

Age can be determined by comparing the depth of one rock layer to another.

Two or more fossils must be compared to determine age.

Explanation

Relative dating places rocks and fossils in order as older or younger, but it does not give a specific age in years. Absolute dating can estimate an age in years, so the disadvantage is that relative dating cannot determine the age in years of an individual fossil. Choice C describes how relative dating can be used, rather than a disadvantage.

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