Humans thrive on less than 17% of Earth’s surface Only 4% grow crops Roman Empire – slight pop growth Golden age of India - not much growth Mayan empire - same as previous Rise of Islam - slow growth Viking conquests - steady growth Crusades - much more growth Mongols in China - steady growth Black plague - huge decrease New world - growth all over much higher Colonial America ……rapid growth Industrial age …..growth rapidly increasing World wars …..growth explodes Modern medicine ……growth more than triples Information age …..growth quadruples If these growth rates continue, the population will double in 50 years Population pyramid – demographic snapshot of a society or state at any given time Shape or structure gives insight into what’s happening in that society Sex – divide up male and female o Brazil 2010 o Males – total number of pop, .8, 1.6, 2.4 and 3.2 million Isn’t stagnant o China 2010 Males 13, 26, 39 ,48 million Greenland 2010 .6, 1.2 , 1.8 and 2.4 THOUSAND o Y axis is 5 year age increments o 3.2 million people between 0 – 4 o Ukraine male ages 30 – 34 = 1.7 million o Uraguay = 140 thousand o United Erab Emirates = 575 thousand o
You've reached the end of your free preview.
Want to read all 3 pages?
- Fall '08
- Demography, fertility rate, growth rate period