8. Human Systems Flashcards
Definitions
1
Q
Crude birth rate
A
Number of live births per 1000 people in a population per year
2
Q
Crude death year
A
Number of deaths per 1000 people in a population per year
3
Q
Infant mortality rate
A
Number of deaths of children less than 1 year old per 1000 live births per year
4
Q
Total fertility rate
A
Average number of births per woman of childbearing age
5
Q
Natural increase
A
Birth rate per 1000- death rate per 1000 all divided by 10
6
Q
Doubling time
A
Length of time it takes for a population to double in size, assuming its natural growth rate remains constant. Formula for approx value:
70/growth rate (%)
7
Q
Life expectancy
A
Average number of years that a person can be expected to live, usually from birth, if demographic factors remain unchanged
8
Q
A
