Answer:
Why can the geologic record be analysed by looking at different rock layers?
A) All layers have the same age.
<u>B) The layers have different ages with the youngest layers on top.
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</u>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.
