1 Human Population Population Explosion • 1830 population at 1 billion. • 1930 population at 2 billion (100 yr. doubling time). • 1975 population at 4 billion (45 yr. doubling time). • 1999 Population hit 6 billion on Oct. 12th • Current population: http://www.census.gov/cgi-bin/ipc/popclockw Population density map of the world in 1994, when the world's population was at 5.6 billion
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Population Explosion - Today at Minesinside.mines.edu/~cshorey/NewFiles/Lecture 34 - Human... · 2008-10-02 · 1 Human Population Population Explosion • 1830 population at 1 billion.
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Human Population
Population Explosion• 1830 population at 1 billion.• 1930 population at 2 billion
(100 yr. doubling time).• 1975 population at 4 billion
(45 yr. doubling time).• 1999 Population hit 6 billion on Oct.