Campbell Essential Biology (7th Edition)
7th Edition
ISBN: 9780134765037
Author: Eric J. Simon, Jean L. Dickey, Jane B. Reece
Publisher: PEARSON
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Chapter 2, Problem 16PS
Interpreting Data. As shown in Figure 2.17, radiometric dating can be used to determine the age of biological materials. Carbon-14 makes up about 1part per trillion of naturally occurring carbon. When an organism dies, its body contains 1 carbon-14 atom per trillion total carbon atoms. After 5,700 years (the half-life of carbon-14), its body contains one-half as much carbon-14; the other half has decayed and is no longer present. French scientists determined that prehistoric cave paintings were made using natural dyes about 13,000 years ago. How much carbon-14 must the scientists have found in the cave paintings to support this result? Express your answer in both percentage of carbon-14 remaining and in parts of carbon-14 per trillion.
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Chapter 2 Solutions
Campbell Essential Biology (7th Edition)
Ch. 2 - An atom can be changed into an ion by adding or...Ch. 2 - If you change the number of _____ the atom becomes...Ch. 2 - A nitrogen atom has 7 protons, and the most common...Ch. 2 - Why are radioactive isotopes useful to tracers in...Ch. 2 - What is chemically nonsensical about this...Ch. 2 - Why is it unlikely that two neighboring water...Ch. 2 - Which of the following is not a chemical reaction?...Ch. 2 - Some people in your study group say they dont...Ch. 2 - Explain how the unique properties of water result...Ch. 2 - Explain why it is unlikely that life could exist...
Ch. 2 - A can of cola consists mostly of sugar dissolved...Ch. 2 - For each statement, identify which major theme is...Ch. 2 - For each statement, identify which major theme is...Ch. 2 - For each statement, identify which major theme is...Ch. 2 - Animals obtain energy through a series of chemical...Ch. 2 - Interpreting Data. As shown in Figure 2.17,...Ch. 2 - Critically evaluate this statement: Its paranoid...Ch. 2 - A major source of the CO2 that causes ocean...
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