Population. Everything we do effects the earth!

Population

Everything we do effects the earth!

World Population

Population

The total number of people in a given area.

Population’s influence

• Variety of businesses

• Transportation

• Number of schools

• Government services

Population patterns tell us A LOT

about our world!

Population Density

http://www.youtube.com/watch?v=s9dFy6xBOBM

Impact Video 1

1. How does India’s high population density affect life in its cities?

Population Density

• A measure of the number of people living in an area.

Population Density

• Measured by square mile

• Found by dividing population by the area

• The higher the number; the more crowded

Japan: 873

Australia: 7

Where are some areas people do not live at?

Where are some areas people do live at?

Birthrate

• The annual number of births per 1,000 people.

Population Changes

• 3 key factors–Birthrate–Death rate–Natural increase

Migration

• The movement of people from one place to another.

Immigration

• Immigration–Coming INTO a country

• Emmigration–EXITING a country

Impact Video 2

• Why did so many people leave their home countries to start a new life in America?

Impact Video 3

• What are at least 2 reasons that millions of Mexicans have crossed the border to live and work in the United States?

Push Pull Theory