Question

a geologist finds indentical index fossils in a rock layer in the grand canyon in arizona and in a rock layer in northern utah, more than 675 kilometers away. what can she infer about the ages of the two rock layers

Answer 1

A. A two rock layer are about the same age

Step-by-step explanation:

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Answer 2

The two rock layers are about the same age

Step-by-step explanation:

a geologist finds indentical index fossils in a rock layer in the grand canyon in arizona and in a rock layer in northern utah, more than 675 kilometers away. she will infer that the two rock layers are about the same age