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Unicef: Country Statistics

For Students 9th - 10th
This site provides data on life expectancy, total fertility rates, crude birth rate and death rates of all countries. There are also links to related information.
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Christian Science Monitor

Christian Science Monitor: Population Decline in Sight

For Students 9th - 10th
This Christian Science Monitor article notes the projections of a UN Conference of March 2001, predicting that fertility rates worldwide are decreasing, and population decline is in sight.
Website
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Catholic Culture: News: Mexico Population Becoming Elderly

For Students 9th - 10th
A news article explaining how Mexico's population is expected to increase among elders and decrease in relation to children because fertility rates have decreased over the past 25 years.
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Unversidad Politecnica De Valencia: Un Viaje Virtual

For Students 9th - 10th
This WWW Server is running in Valencia, ensconced in fertile terrain on the shores of the Mediterranean close to the mouth of the Turia river. Valencia and its environs constitute a first rate tourist centre in both infrastructure and...