Question

which statements about this diagram are true? check all that apply. layers 5 and 7 are the same age. faulting created the differences in layers. erosion created the differences in layers. layers 2 and 9 are the same age. the organisms in 1 and 8 lived tens of millions of years apart.

Explanation:

Step1: Analyze layer - age relationship

In a geological cross - section, if two layers have the same type of fossils, they are likely of the same age. Layers 2 and 9 have the same type of shell fossil, so they are the same age.

Step2: Analyze fossil age difference

Fossils in different layers that are far apart vertically likely represent organisms that lived at different times. Layers 1 and 8 are separated by multiple other layers, so the organisms in 1 and 8 lived tens of millions of years apart.

Step3: Evaluate other statements

There is no evidence of erosion creating layer differences as the layers seem continuous. Also, layers 5 and 7 do not appear to be the same age as they have different characteristics and fossil content. Faulting is not indicated in the diagram as there are no offset layers.

Answer:

• Layers 2 and 9 are the same age.
• The organisms in 1 and 8 lived tens of millions of years apart.