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33.4 years for South Africa to double

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Q: How long did it take for the population to double a second time?
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How long did the population double from 3 billion to 6 billion?

how long did it take to double from 3 billion to 6 billion


How long will it take to double the population of Mexico?

With a 2009 rate of natural increase in Mexico of 1.13%, its population would be expected to double in ~61 years.


It took 50 years for earth's human population to double from 1 billion how long did it take for the population to double again to 4 billion?

100 years


How long will it take Kenya's population to double?

Depends on how much power thirst you drink.


How long will it take for mankind to double in size?

mankind's don't need time to double the size. becauze they are very fast in doubling the population.


What is the Rule of 70 for population growth?

The Rule of 70 is a quick way to estimate how long it takes for a population to double in size based on its growth rate. To use the Rule of 70, divide 70 by the annual growth rate of the population. The result will give you approximately the number of years it takes for the population to double.


Given a growth rate of 3 percent per year how long will it take for a population of 100000 individuals to double?

20 years


If a population has a growth rate of 2.5 percent how long will it take to double?

27.6 yearst = 0.69 / r where r is the growth rate


How long will it take the world population to double?

Sadly, the way babies are being continually aborted, not going to happen.


How long would it take the population of the earth to consume a mole of bananas if each person consumed twenty bananas every day?

a second


How long did it take the world population to double?

It took approximately 123 years for the world's population to double from 3 billion to 6 billion, from 1960 to 1983.


How did the African American population grow?

African countries take longer to "double time" meaninh the time it takes for a county's population to double its number