Natural Increase and Decrease
- Statement of inquiry
- What are the components of global population change?
- Aims of the lesson
- To recall definitions of birth rate, death rate, natural increase and natural decrease.
- To be able to calculate natural increase
- To be able to examine how rates of natural increase vary globally.
Task One - Define Birth Rate and Death Rate
Copy these definitions:
The average annual number of births during a year per 1,000 persons in the population; also known as crude birth rateBirth Rate
The average annual number of deaths during a year per 1,000 population; also known as crude death rate.Death Rate
Task Two - Natural Increase or Natural Decrease
Using a population data set such as the CIA World Factbook or Population Reference Bureau World Population Data Sheet complete the following table:
|Country||Location||Birth rate [BR]||Death rate [DR]||BR-DR=||Natural Increase or Natural Decrease|
|Bangladesh||South Central Asia||17.88||5.44||12.44||Natural Increase|
|United States of America|
Use data.worldbank.org to replicate the following graph: