FIGURE 4.1 Depending on fertility and mortality rates, total world population could reach nearly 12 billion by 2050, but could be as low as 7.9 billion. SOURCE: United Nations.

FIGURE 4.1 Depending on fertility and mortality rates, total world population could reach nearly 12 billion by 2050, but could be as low as 7.9 billion. SOURCE: United Nations.

FIGURE 4.2 Percentage of urban population by region, 1950-2050. SOURCE: United Nations.

FIGURE 4.2 Percentage of urban population by region, 1950-2050. SOURCE: United Nations.



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