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Author Question: Why does the 2009 U.S. population continue to grow even though the United States (Read 638 times)

penza

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on: Oct 27, 2013
Why does the 2009 U.S. population continue to grow even though the United States has essentially established a ZPG?
A) emigration
B) immigration
C) better sanitation
D) baby boomer reproduction
E) the 2007-2009 economic recession


Celeste

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Reply #1 on: Jun 16, 2019
B


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