World_Regions_Pop#1.pdf - 2.2 \u2022 7 billion people on the planet \u2022 Population is exceptionally and exponentially growing \u2022 Can\u2019t predict future

World_Regions_Pop#1.pdf - 2.2 u2022 7 billion people on...

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2.2 7 billion people on the planet Population is exceptionally and exponentially growing Can’t predict future demographics without understanding the past Human societal evolution - Great petition were hunter gatherers - Very small numbers in tribes Populations size shifts during Agricultural Revolution - People become farmers and leave nomadic lifestyle Civilization - People organize into societies - Populations starts to grow at slow but steady pace - 100 million people for the entire globe (Still small global population) 1 billion people alive 200 Years ago (Industrial Revolution) 1804 - 1 million 123 yrs later (1927)= 2 billion people 33 yrs - 3 billion 1974 (14 yrs) 1999 (12 years later) in 1999 2010 = 7 billion About every decal add another billion people - Exponential growth Population density map - Darker the area the more people packed into square kilometer
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