Answer:
Why can the geologic record be analysed by looking at different rock layers?
A) All layers have the same age.
B) The layers have different ages with the youngest layers on top.
C) The layers have different ages with the oldest layers on top.
D) The layers have different ages with the youngest layers on bottom.
Explanation:
Since rock forms in layers, the oldest layer of rock will be at the bottom and the youngest on the top. If the rock layers aren't in a perfect shape, they may no longer be in order from oldest to youngest.
