Final answer:
The fertility rate measures the average number of children born to women, with sub-Saharan African countries having the highest rates and European and East Asian countries having the lowest rates.
Explanation:
Fertility rate refers to the average number of children born to women in a specific population.
In terms of countries with fertility rates, the sub-Saharan African nations tend to have the highest rates, while countries in Europe and East Asia typically have the lowest rates.
The impact of fertility rates on a country's standard of living is significant, as high fertility rates can strain resources and economies, while low fertility rates can lead to aging populations and potential workforce shortages.
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