Which of the following is a characteristic of an index fossil?
A.
The fossil is found only...
Which of the following is a characteristic of an index fossil?
A.
The fossil is found only in an isolated part of the world.
B.
The fossil organism must have lived during a long span of Earth's history.
C.
The fossil must be found in great numbers.
D.
The fossil must look like many other fossils.
Answers: 3
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