Why is the U.S. population rate growing as rapidly as it is despite the fact that its fertility rate is 2.03, below the replacement-level fertility of 2.1 children per female?

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    Even though our fertility rate is below RLF = 2.1, for many years after World War II the fertility rate exceeded the replacement level; therefore, the population is still going up because more women are reproducing.
    emigration
    immigration
    Both the first and third answers are correct.

asked May 30, 2013 in Biology by anonymous
    

1 Answer

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Both the first and third answers are correct.
answered May 31, 2013 by Bioshare ~Top Expert~ (34,070 points)

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