Question

Superposition is used to assign relative ages to rock layers, the newer layers on the bottom and the oldest layers on the top.

Answer 1

The oldest layers are on the bottom thats why they are the oldest. Super position is what it is called if thats what your asking.

Answer 2

Superposition is used to assign relative ages to rock layers, the newer layers on the bottom and the oldest layers on the top.
 - false