Notes
Geography: POP GROWTH
Content of the notes (2)
Page 1
Population Growth
World population is growing rapidly Always increasing at a faster rate
More
People (Natural
Increase) = High Birth Rate + Low Death
Rate
Less People (Natural Decrease) = High Death Rate + Low Birth Rate
Two factors affect population size:
Birth
Rate: No. live babies, per 1000, per yr
Death
Rate: No. deaths, per 1000, per yr
Population affected by migration
5 stages of Population Growth
Birth & Death rates
differ from country to country
Slow
or fast
Shown
in Demographic Transition model (DTM)
1. Total population
low & balanced:
High birth & death rates
2. Total population rising:
Death rates falling
Birth rates still high - improving health care
& sanitation
3. Rapid Natural
increase high:
Small gap between
birth & death rates
Availability of
contraception
Less children needed to work - mechanization of farming
4. Total population
high:
Balanced by low birth
& death rate
Birth control widely available & desire
for smaller families
5. Total population high,
rapidly falling:
Ageing population
Continued desire
for smaller families & to have children later in life