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Population increase or decrease
worldwide is a function of two factors: Births and deaths. If
births exceed deaths, population increases.
Population increase or decrease within a political unit such
as a nation, a
state, or a county is a function of four factors: Births and
immigration
minus deaths and emigration.
If in Country X each birth is matched by one death and each
immigrant (a
person entering Country X) is matched by one emigrant (a person
leaving
Country X) and if each woman has two children, the population
of Country X
will be stable!
However, if the population of Country Y is increasing, births
are exceeding
deaths and/or immigrants are outnumbering emigrants and/or
women are having
an average of more than two children each.
Facts about population growth in the world are not difficult
to understand: If births exceed deaths, population grows. Facts
about population growth in the U.S. are not difficult to understand:
If births exceed deaths and/or if immigration exceeds emigration,
population grows. Population in the world is growing at a frightening
rate. Population in the U.S. is growing at an unsustainable
rate.
Concerned about the effect of increasing population upon the
U.S.? If so, learn more about birth rates and net immigration.
Learn how education and family planning have reduced birth rates
in the U.S. Learn how policy makers and law makers have increased
net immigration. If a more densely populated U.S. is not what
you want for future generations, think about action you might
take to reverse the trend. Think Population!
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