Mia has been learning about the ways scientists study rocks and how they determine their relative ages. Write the letters of the correct answers on the lines at left.

3. Mia knows that scientists use several methods to help determine the relative ages of different rock layers, including using fossils. Which of the following are other ways to determine the relative ages of rock layers? Choose the three that apply.

A. faults

B. law of superposition

C. radiometric dating

D. rock half-life

E. igneous intrusion