Slide 1: Human Population
Slide 2: Anthropologists believe that the human species is about 3 million years old
Slide 3: Modern Humans emerged around 30,000 years ago
Slide 4: For most of that 30,000 years humans were hunters and gatherers.
Slide 5: Life was difficult for the early humans. Estimates of the total population indicate that for centuries it remained at about 10 million.
Slide 6: Agriculture ~ 9500 BC • When agriculture was introduced, communities developed. • Communities helped early humans to survive so population began to grow.
Slide 7: Ancient Egyptian farmer Source: http://www.kingtutone.com
Slide 8: Farmstead occupied from 3500 BCE to 3100 BCE
Slide 9: About 1 A.D. population grew to 300 million (World Census Bureau) Bronze Statuette of Lar with copper inlays, Rome 1-25 AD
Slide 11: According to the graph what was the population in 1800? •
Slide 12: In 1800 population was estimated to be about 1 billion How many years did it take for the population to go from 300 million to 1 billion?
Slide 13: What caused the sudden increase in population?
Slide 14: In the 18th Century the Industrial Revolution began • • • • • • Standards of living rose Better agricultural techniques More food available Less epidemics Sanitation improved Communication of scientific ideas increased
Slide 16: Determine on which continent the majority of the world’s population lived in 1800.
Slide 17: After WWII population growth exploded • Between 1960 -1975 population grew by 1 billion • Between 1975 and 1987 population grew by another billion • Do you notice how long it took for each additional billion increase?
Slide 18: Which continent had the greatest population growth between 1800 and 1900?
Slide 19: Which continent had the greatest population growth between 1900 and 2000?
Slide 20: Which continent is predicted to have the largest increase in population by 2050?
Slide 21: Which continent is predicted to have the greatest decline in population by 2050?
Slide 22: Population was 1.6 billion in 1900 By the end of 2000 the population grew to 6.1 billion
Slide 23: Before 2050 the world is expected to have…
Slide 24: 9 BILLION PEOPLE
Slide 25: Think about it… What effect does the increase in population have on the environment?
Slide 26: 2,000 years ago...
Slide 27: 1800
Slide 28: 1927
Slide 29: 1960
Slide 30: 1974
Slide 31: 1987
Slide 32: 1999
Slide 33: 2050
Slide 34: References • www.KingTutOne.com • http://www.actionbioscience.org/evolution/johanson.html • http://anthro.palomar.edu/homo2/default.htm • 15. Bronze Statuette of Lar with copper inlays, Rome 1-25 AD http://www.clevelandart.org/explore/magnify.asp?woID=8 • http://en.wikipedia.org/wiki/Image:Devils_Punchbowl_Waterfa
Slide 35: • http://en.wikipedia.org/wiki/Image:Population_curve.svg • http://www.census.gov/ipc/www/worldhis.html • Image:Kalina hunter commons.wikimedia.org • http://www.pbs.org/wgbh/nova/worldbalance/ • Mark Flinn and Rob Quinlan http://web.missouri.edu/~flinnm/courses/mah/newsassignmen • http://en.wikipedia.org/wiki/Neolithic_Revolution • http://www.prb.org/