Multiple Choice
What is an index fossil?
A) An organism that existed for a vast period of time and is representative of an era
B) An organisms that is restricted to one small, geographic setting
C) A trace fossil that defines a colony of organisms
D) An organism that was geographically widespread but limited to a short span of geologic time
Correct Answer:

Verified
Correct Answer:
Verified
Q11: In radioactive decay, an unstable _ isotope
Q12: Hadean is an informal term used by
Q13: <img src="https://d2lvgg3v3hfg70.cloudfront.net/TB7867/.jpg" alt=" Which rock layer
Q14: When rocks are _, several adjacent layers
Q15: The fossil record is biased toward preserving
Q17: What is the definition of an inclusion?<br>A)A
Q18: _ is the scientific study of fossils.<br>A)Quaternary
Q19: A Devonian-aged limestone contains fossils of brachiopods
Q20: What is a fossil assemblage?<br>A)A fossil that
Q21: Carbon-14 dating is useful for paleontologists researching