Global Population Growth Flashcards
What do demographic transition models show?
Population change over time.
Marked differences between LEDCS and MEDCS.
Until the 1800s what happened?
World population grew slowly for thousands of years.
What happened in 1920?
World population reached one billion.
When did the world reach 3 billion?
Early 1970s.
In 1999 what happened?
World population reached 6 billion
What is the global rate of population growth?
1 billion every 15 years.
How is the natural increase calculated?
Birth rate - death rate.
As countries go through the demographic transition model what rises?
Total population rises.
In stage 1 birth rate and death rate are what?
Balanced.
Why was the demographic model developed?
It studies the experiences of countries in western Europe and north America
