Question

The table below shows the fossils found in various layers of an undisturbed rock: Fossils In Rock Layers Layer (from top) Fossil in Layer 1 A, C 2 E 3 A, D, F 4 B 5 F, C 6 D, B Which is most likely an index fossil? A B D E

Answer 1

Answer:

E

Explanation:

Because it is the only letter that appears once.

Hope it helped!

Answer 2

Fossils largely means the remains of decayed plants and animals. Since they are preserved in rocks, they are of the used as a key in determining the age of rocks in which they are found. The fossil which is most likely to be index is E

• Index fossils are usually very distinctive from other fossil types based it's period of occurence and lasting time frame, as it often occurs over a very limited period of time.

• Looking at the table; a distinct fossil which occurred only in one rock layer is the fossil lettered E. This shows that it occured at a certain period of time and did not exhibit a long span line the other fossils.

Therefore, the fossil lettered E is most likely the index fossil.

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