Asked by Mark

Why is doubling time so low in African countries?
Answered by Ms. Sue
Doubling of what??
Answered by Mark
doubling time is the time it takes for a country's population to double in number
Answered by Ms. Sue
According to the statistics in this site, Africa doesn't have an especially low doubling rate.

http://en.wikipedia.org/wiki/World_population

However, high death rates and lack of immigration probably keep its population increase lower than some other places.
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