WORLD POPULATIONPopulation Growth and Population

Movement

Reasons for Population Growth

-Approximately 7 billion people on the planet

Population Grown due to- - Lowering death rate-

o Better health care o Better living conditions o More plentiful food supplies

- Birth rates grown- o Asia o Africa o Latin America

Challenges in Population Growth

- More food is needed for growing population o Advances in technology help increase food

Improved irrigation systems Hardier plants

- Severe Lack of Food o Famine- caused by warfare and crop failures

- Severe Lack of Water - Lack of enough Housing - More Services such as: o Hospitals o Schools

Where People Live

- 30% of Earth’s surface is land o Only 50% of the land on Earth is

livable

Population Distribution

- People are not evenly distributed around the world o People choose to live where there are-

Fertile soil Mild Climates Natural Resources Water Resources • Rivers • Coastlines

Where People Live

- 2/3 of the population is clustered o 5 Regions- East Asia South Asia Southeast Asia Europe Eastern North America o More People Live near- Cities Jobs Resources

Population Density

- Average # of people per sq. mile o Total Population %/Total Land Area

- Population Density Represents o Average # of people; not evenly

distributed

Population Movement

- Types of Migration- o Internal Migration- same country; from farms

and villages to cities Search of jobs Results in urbanization- growth of cities

o International Migration- between countries Emigrate- leave country where born to

move to another country Immigrants- emigrant from original

country • Example- moving from U.S.A. to Canada

Reasons People Move

- Immigration Increased greatly over past 200 years

- Reasons People Move- Push Factors vs. Pull Factors Better transportation Shortage of Farmland Need for Jobs Disease Warfare- Iraqi Refugees Persecution- - 1990s Rwanda Refugees Natural Disasters- Hurricane Katrina

Refugees

Push Factors Vs. Pull Factors

Push factors convince people to leave their homes.

Pull factors attract them to other places.

Which of the reasons for moving on the previous slides are push factors, and which are pull factors?

Label each push or pull-

Impact of Migration

o Impact on Regions they leave- Population Decreases Eases Overcrowding Hurts Economy- due to loss of

skilled/educated workers Divides Families o Impact on New Country- New forms of art, music, food, languages Fear/Resentment • Can lead to violence, unjust treatment of

immigrants