Study Guide for Campbell Biology
Study Guide for Campbell Biology
11th Edition
ISBN: 9780134443775
Author: Lisa A. Urry, Michael L. Cain, Steven A. Wasserman, Peter V. Minorsky, Jane B. Reece, Martha R. Taylor, Michael A. Pollock
Publisher: PEARSON
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Chapter 25, Problem 2IQ
Summary Introduction

To estimate: The age of the fossil that has 18 of the atmospheric ratio of carbon-14 to carbon-12.

Introduction: The actual rates of fossils and rocks are determined using radiometric dating. Each radioactive isotope decays at a fixed rate, which is its half-life. The half-life is defined as the number of years taken for the decay of 50% of the parent isotope to the daughter isotope. The isotopes, which decay very slowly, can be used to date older fossils.

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Comparison of carbon -14 and nitrogen -14 in sample Age of fossils in years
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