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Base your answers to questions 48 through 50 on the rock columns below and on your knowledge of Earth
science. The rock columns represent four widely separated locations, W, X, Y, and Z. Numbers 1, 2, 3, and 4
represent fossils. The rock layers have not been overturned.

Which numbered fossil best represents an index fossil?
(1) 1
(2) 2
(3) 3
(4) 4

Base your answers to questions 48 through 50 on the rock columns below and on your knowledge of Earth science The rock columns represent four widely separated l class=

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oopsydaisy
After a lot of research on the answers to questions 48 through 50 on the rock columns and studying the picture of the rock columns, the answer is easy to understand. 

All of the rock columns in the pictures each represent four separated locations of W, X, Y, and Z. The numbered fossil that will best represent an index fossil will be the picture of the rock column number 1. 

The correct answer choice will be number 1, 1.