Populations 1 Flashcards
1
Q
Factors affecting birth rates
A
Economic conditions Cultural/ religious backgrounds Social pressures Birth control Political factors-gov through education and taxation
2
Q
Factors affecting death rates
A
Age profile- greater proportion elderly people
Life expectancy at birth-MEDC
Food supply
Safe drinking water/ effective sanitation-water borne diseases cholera
Medical care- healthcare + education
Natural disasters
War- immediate drop pop + longer term fall fewer fertile adults
3
Q
birth rate calculation
A
Births per year
———————- X 1000
T pop same year
4
Q
Death rate calculation
A
Deaths per year
———————- X 1000
T pop same year
5
Q
Two events contributed most human population explosion
A
development agriculture
development manufacture trade - industrial revolution
6
Q
Average life expectancy definition
A
Age at which 50% individuals particular population still alive
