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Human population milestones

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Presentation on theme: "Human population milestones"— Presentation transcript:

1 Human population milestones
The ultimate in carpooling? LOL

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3 Hunter Gatherer societies
Nomadic Small family groups Life expectancy low

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5 Agricultural revolution – 10,000-12,000 years ago: 2 big changes created the POTENTIAL for growth

6 1. Food surplus created demand for larger famlies

7 Children increase agricultural productivity

8 2. Settlements created along waterways for transportation

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10 Bubonic Plague

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12 Thomas Malthus Early 1800’s Food is necessary for survival
“Passion between the sexes is necessary and will remain nearly in its present state” Population growth will exceed Earth’s ability to supply food “premature death must in some shape visit the human race Epidemics, pestilence and plague advance in terrific array, and sweep off their thousands and ten thousands”

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