Question

the grand canyon was formed when a river cut through the rock layers. the * 1 point process took 5 - 6 million years. according to the law of cross - cutting relationships, the ______________ is younger. choose river he mother isotope and which is the daughter sediment layers

Explanation:

The Law of Cross - cutting Relationships states that a geologic feature which cuts through another is the younger of the two. In this case, the river (which cut through the sediment layers) is the younger feature.

Answer:

River