Human Population Do you know what is the population in the USA? New Jersey or Princeton?

Local Population

Hunter-gatherer lifestyle Very slow growth (500,000-12,000 years ago). Very slow growth (500,000-12,000 years ago). Nomadic groups. Nomadic groups. Small populations and high mortality rate. Small populations and high mortality rate.

Agricultural Revolution Domestication of animals and cultivate certain plants for food (10,000 – 12,000 years ago). Domestication of animals and cultivate certain plants for food (10,000 – 12,000 years ago). Stable and increased food supply. Stable and increased food supply. Faster population growth. Faster population growth. 10,000 years ago ~ 2M to 20M people. 10,000 years ago ~ 2M to 20M people. 2,000 years ago ~ 177M to 330M. 2,000 years ago ~ 177M to 330M.

Population Explosion Population growth accelerated after the year Population growth accelerated after the year Decline death rate due in part by better sanitation, control of diseases, increased availability of food and improved economic conditions. Decline death rate due in part by better sanitation, control of diseases, increased availability of food and improved economic conditions. Birth rate still high. Birth rate still high. From 550M in 1650 population rose to 1B by 1800 and to 2B by From 550M in 1650 population rose to 1B by 1800 and to 2B by 1930.

After WWII mortality rate felt again due to improve in health and hygiene. After WWII mortality rate felt again due to improve in health and hygiene. Birth rate stayed high. Birth rate stayed high. The population grew from 3B to 5B between (27 years!!!!!). The population grew from 3B to 5B between (27 years!!!!!). 20% of the people live in MDC and 80% in LDC. 20% of the people live in MDC and 80% in LDC. On October 13, 1999 Baby Nevic was born in Bosnia as the six-billionth member of the human race. On October 13, 1999 Baby Nevic was born in Bosnia as the six-billionth member of the human race.

7 th Billion On October 31 st 2011, baby Danica was born in the Philippines. She was the 7 th billion human on Earth. On October 31 st 2011, baby Danica was born in the Philippines. She was the 7 th billion human on Earth.

History of Human Population Growth

Snap shot of human growth between AD

What is the current World population? 7,074,655,194 China : 1.3B China : 1.3B India : 1.2B India : 1.2B USA : 313M USA : 313M Indonesia : 245M Indonesia : 245M Brazil : 203M Brazil : 203M

What factors, looking at previous trends, may cause reductions in future populations?

How would the graph look in a 1,000 years?

Name 5 stresses the Human population is putting on Earth