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Why are index fossils good indicators of geologic time? A. They are rare. B. They lived during a short period of geologic time. C. They lived during a long period of geologic time, D. They lived with humans,
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13 votes
Why are index fossils good indicators of geologic time?

A. They are rare.

B. They lived during a short period of geologic time.

C. They lived during a long period of geologic time,

D. They lived with humans,​

User Ajith Pandian
by
4.6k points

2 Answers

12 votes

Answer:

B. They lived during a short period of geologic time.

Step-by-step explanation:

Index fossils are used to define and identify geologic periods. Index fossils must have a short vertical range, wide geographic distribution, and rapid evolutionary trends.

User Justin Mathew
by
4.2k points
9 votes

Answer:

the answer is B

Step-by-step explanation:

User Anatolyevich
by
4.3k points
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