Demographic Transition: Historical Perspectives

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What is the fraction of adult life spent giving care for women assuming e(0) = 27.5?

71 percent

What is the fraction of adult life spent giving care for women assuming e(0) = 77.5?

14 percent

What is the total fertility rate in 2000?

2.7

What was the life expectancy at birth in 1900?

<p>30 years</p> Signup and view all the answers

What is the estimated global population size in 2100?

<p>9.46 billion</p> Signup and view all the answers

What was the demographic situation like before the start of the demographic transition?

<p>Life was short, births were many, and the population was young.</p> Signup and view all the answers

What happened first during the demographic transition?

<p>Mortality declined</p> Signup and view all the answers

How will the global population size have changed by 2100 compared to 1800?

<p>It will have increased by a factor of ten</p> Signup and view all the answers

How will the ratio of elders to children have changed by 2100 compared to before the demographic transition?

<p>It will have increased by a factor of ten</p> Signup and view all the answers

What is the projected change in births per woman by 2100 compared to before the demographic transition?

<p>It will have decreased by a factor of three</p> Signup and view all the answers

What is the fraction of adult life spent giving care for women assuming e(0) = 77.5?

<p>14 percent</p> Signup and view all the answers

Why did mortality begin to decline according to the text?

<p>Because of medical progress</p> Signup and view all the answers

What is the projected change in births per woman by 2100 compared to before the demographic transition?

<p>Increase to 2.0</p> Signup and view all the answers

What was the life expectancy at birth in 1950?

<p>47 years</p> Signup and view all the answers

In which region has the total fertility rate been only 1.4 for some time?

<p>Europe</p> Signup and view all the answers

What was one of the significant changes brought about by the global demographic transition?

<p>Increase in the length of life expectancy</p> Signup and view all the answers

What was the initial factor that led to the start of the demographic transition in Europe around 1800?

<p>Decline in mortality rates</p> Signup and view all the answers

What is the projected change in the ratio of elders to children by 2100 compared to before the demographic transition?

<p>Rise by a factor of ten</p> Signup and view all the answers

What is the estimated change in global population size by 2100 compared to 1800?

<p>Factor of ten increase</p> Signup and view all the answers

What will happen to the births per woman by 2100 compared to before the demographic transition?

<p>Decrease from six to two</p> Signup and view all the answers

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