Human Population. Demography. Trends in Population. Demography is the study of human populations.
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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:
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: is a special type of graph that summarizes the age and gender structure of a population.