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Coal and spewed enormous volumes

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Beginning in the late 19th century and continuing into the 20th century, the industrial revolution was fueled by coal and spewed enormous volumes of 14C-depleted CO2 into the atmosphere. 

a) Why is coal 14C-depleted?

b) How would the increase in 14C-depleted CO2 affect the date of a very old object in which its 14C/12C ratio was compared to the 20th-century ratio?

Reference no: EM131054447

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