19. When a radio-isotope in a fossil with a half-life of 3,000 years has been reduced to 1/8th of its original amount, how old is the fossil? a. 2,400 years b. 36,000 years c. 9,000 years d. 12,000 years e. 18,000 years

19. When a radio-isotope in a fossil with a half-life of 3,000 years has been reduced to 1/8th of its original amount, how old is the fossil? a. 2,400 years b. 36,000 years c. 9,000 years d. 12,000 years e. 18,000 years

BIOLOGY:CONCEPTS+APPL.(LOOSELEAF)

10th Edition

ISBN:9781305967359

Author:STARR

Publisher:STARR

Chapter16: Evidence Of Evolution

Section: Chapter Questions

Problem 7SA: If the half-life of a radioisotope is 20,000 years, then a sample in which three-quarters of that...

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Concept explainers

Paleontology

A branch of science concerning the scientific study of life from ancient times is known as paleontology. The scientists working on paleontology are known as paleontologists. Paleontologists collect the fossils of organisms from ancient times to classify them. The paleontologists also study the environment from ancient times to study the interactions between different organisms.

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a. 6
b. 16
c. 32
d. 64
e. 128
2222222
19. When a radio-isotope in a fossil with a half-life of 3,000 years has been reduced to 1/8th of its original
amount, how old is the fossil?
a. 2,400 years b. 36,000 years
c. 9,000 years
d. 12,000 years e. 18,000 years

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