1. POPULATION GROWTH PLACES A STRAIN ON A COUNTRY’S RESOURCE BASE (food, water, energy)
IMPORTANT CONNECTION BETWEEN POPULATION AND RESOURCES

2. What accounts for the change around 1800?

3. DEMOGRAPHY Part 1.

4. Demography: The study of population and population statistics
Demography: The study of population and population statistics. Greek: “demos” –”common people”
Demographers examine issues relating to the structure, size, and distribution of human populations.
E.G.
GROWTH RATE (speed of growth)
HEALTH
BIRTHS AND DEATHS
WEALTH
MIGRATION
DENSITY

5. Demographers use rates… (*stats from 2003)
Births per day in Canada: 906
Births per day in Russia: 3 836
Which country is growing fastest due to births?
Population: 32 million
Population: 143 million
In order to compare the births in each country, we use the Birth Rate:
Birth Rate = # of births per year x 1000
Total Population
Canada: x 1000 Russia: x 1000
= 10 births/ people = 10 births / 1000 people

6. How do Populations Change?
4 ways… Naturally: 1) Births and 2)Deaths Migration: 3) Immigration and 4)Emigration

7. How do populations change?
Natural Change (Births and Deaths)
Birth Rate (# of births per year / population) x 1000
Death Rate (# of deaths per year / population) x 1000
Balance between Births and Deaths is “Natural Increase Rate”
Natural Increase Rate = Birth Rate – Death Rate
MIGRATION (Immigration and Emigration)
Immigration Rate (# of immigrants per year/population) x 1000
Emigration Rate (# of emigrants per year/population) x 1000
Balance between Immigration and Emigration is “Migration Rate”
Migration Rate = Immigration Rate – Emigration Rate

8. Population Growth Rate
The overall growth of a population can be determined by adding the natural increase rate and the net migration rate. e.g. Canadian Example 3/ /1000 = 8/1000 (0.8%)

9. Population Density
Population Density is a measure of the number of members of a population in a given area. It is usually measured in km2.
PD = # of people/area
e.g.
Country/Landmass
Density (people/km2)
World 41
Singapore
7 148
Canada
3.4
Toronto
3 972

10. DEMOGRAPHY Part 2.

16. Population has already reached 7 billion in 2015