Human Population. Demography. Trends in Population. Demography is the study of human populations.
is the ratio of people in the “dependent” ages to those in the “working” ages.
Canada’s 2007 ratio was 45%
Pop. 14 & under + pop. 65 and older ÷ pop. 15 to 64 x 100
Infant Mortality Rate: fundamentally changed the nature of life in many ways…
The average lifespan of a human at birth.
50- years is low
75+ years is high
Canada’s life expectancy in 2006 was 80 years.
Population Pyramid: fundamentally changed the nature of life in many ways… is a special type of graph that summarizes the age and gender structure of a population.