13. the picture illustrates three cross sections of rock layers from three different areas.\nwhat can be…

13. the picture illustrates three cross sections of rock layers from three different areas.\nwhat can be determined about the relative ages of the fossils?\na. fossils u, w, v, and x were formed more recently than y and z.\nb. fossils u, w and y were formed further in the past than v, x and z.\nc. fossils u, w and y were formed around the same time period as v, x and z.\nd. fossils u, w and y were formed more recently than v, x and z.

13. the picture illustrates three cross sections of rock layers from three different areas.\nwhat can be determined about the relative ages of the fossils?\na. fossils u, w, v, and x were formed more recently than y and z.\nb. fossils u, w and y were formed further in the past than v, x and z.\nc. fossils u, w and y were formed around the same time period as v, x and z.\nd. fossils u, w and y were formed more recently than v, x and z.

Answer

Explanation:

Step1: Recall principle of superposition

In undisturbed rock - layer sequences, older layers are at the bottom and younger layers are at the top. Also, fossils in lower layers are older.

Step2: Analyze rock - layer correlation

Layers with similar fossils are likely from the same time period. Fossils U, W, and Y are in higher layers compared to V, X, and Z in their respective cross - sections. So, fossils U, W, and Y were formed more recently than V, X, and Z.

Answer:

D. Fossils U, W and Y were formed more recently than V, X and Z.