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Birth rate ­ the number of live births in a country per 1000 per year.
Death rate ­ the number of deaths in a country per 1000 per year
Natural change ­ the difference between the birth rate and the death rate, normally measured as a percentage. It can be natural increase (normally in
LEDCs where fertility rates are high ) or natural decrease (most common in MEDCS due to ageing populations)
Infant mortality rate ­ the number of deaths of children born in their first year in a country per year per 1000
Fertility rate ­ the average number of children that a woman is expected to bear in her lifetime
Life expectancy ­ the average age that a person is expected to live to in years
Longevity ­ the increase in life expectancy over time
Migration rate - The number of people moving into an area (immigration) less the number moving out (emigration)
Population Density -The number of people living per square kilometre in a country/area/city
World population growth

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Low growth rates: Europe, Oceania and North America
Example : europe's population is predicted to decline by 90million between 1995 and 1950
High growth rates: Asia (rapid but declining)
Example: China, India and Pakistan are expected to contribute greatest to world population growth between 1995 and 2050 and it is estimated that in
this time, India will overtake China as most populous country.…read more

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Stage of development ­ population structure and the stages of the dtm
All countries and regions of the world are dynamic and changing. They develop both economically and socially and this affects population change over
The global fertility rate is 2.12 which varies at the country level
In MEDCs, fertility rates tend to be lower than 2.1, such as Germany's is at 1.3
In LEDCs, fertility rates tend to be much higher, such as Nigeria's which is 6.…read more

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Global death rates…read more

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The demographic transition model
Stage 1 Stage 2 Stage 3 Stage 4 Stage 5
High Early Late Low Decline
fluctuating expanding expanding fluctuating
High birth A period of A period of A period of The death
rate and high high birth rate falling birth low birth rate rate slightly
death rate, but falling rate and and low desth exceeds the
both of which death rate continuing fall rate both of birth rate.
fluctuate. in death rate which
fluctuate.…read more

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DR may slightly
cultural factors ­ the availability of increase because
children seen as a family planning the population is
sign of fertility schemes which are ageing
Religious reasons. often supported by
governments This stage has only been
recognised in recent
years and only in some
Western countries.…read more


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