Answers by Ignazio
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Answers by Ignazio

Answers by Ignazio
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An artifact contains one-fourth as much carbon-14 as the atmosphere. How old is the artifact?
answered Nov 15, 2017
0 votes
26.5k views
There is little vertical air movement in the __ because of the cold, heavy air at the bottom of the layer.
answered Apr 16, 2017
5 votes
179k views
What is the definition of civilization?
answered Mar 2, 2017
7 votes
146k views
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