top 10 populated contires
china
india
united states
indonesia brazil pakistan
nigeria
bangladesh
russia
japan
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the world hit the first billion people on 1800
12 years it takes to reach the next billion
higher population because people live longer.
*medicine
*food
*clean water
*sanitation
*exercise
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The more people the easier it is to add people to the population
The rate of natural increase is slowing
Now that women have education they want to have a career before they have kids
population trend is 65+
in most contries women want 2 children
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