The replacement fertility rate (TFR) in developed countries 2.1 and not 2.0 because "some people get married more than once" (Option B)
<h3>What is Replacement Fertility Level?</h3>
The degree of fertility of a woman when she propagates exactly enough girls to replace her in the following generation is referred to as replacement level fertility. It is known as the NRR (Net reproduction rate), and it exclusively counts daughters or female children.
TFR is also used as a measure of replacement-level fertility. It is the average number of offspring required to replace both parents in the next generation. A TFR of 2.1 is considered replacement level fertility in industrialized nations. TFR at the replacement level must be more than 2.0. If TFR is 2.0, which is two children per couple, can you anticipate all female offspring to survive until they reach childbearing age? No, TFR must be more than 2.0.
Furthermore, the sex ratio at birth has consistently favored boys, with 105 boys born for every 100 females. After accounting for all of these variables, the replacement level of fertility is 2.1.
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Full Question:
Why is the replacement fertility rate in developed countries 2.1 and not 2.0?
