Human Evolution And The Fossil Record
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Title: Human Evolution And The Fossil Record

Essay Details:

Subject: Science
Author: Gregory D
Date: October 15, 2013
Level: University
Grade: A
Length: 6 / 1782

Essay text:

In the study of hominid evolution, two main methods of dating are used: carbon-14 and potassium-argon dating. Carbon-14 dating involves the decay of radioactive C-14, which has a half life of 5770 years. This makes this method useful for dating of recent fossils, with good accuracy, up to 50,000 years back. After 5770 years, half of the carbon-14 in a fossil decays to nitrogen-14. Since the ratio of carbon-12 to carbon-14 in a living organism remains the same as in the environment around them because the organism constantly eats and replenishes it, if it were to die, the ratio would change greatly after many years...

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