The total fertility rate worldwide.
TFRs range from 1.7 in more
developed countries to 4.6 in world population is 6.8 billion,
the least developed countries. and by 2025 is projected to
increase to 8.1 billion.
PoPulation RefeRence BuReau
The share of people worldwide
living on less than $2 a day. the population of Africa is
projected to double to almost
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