Population a group of people within an area

Distribution the spatial property of being scattered about over an area or volume

Densely an area with lots of people living in it

Sparsley an area that has a few people living in it

Birth rate number of births in a year per 1,000 population

Death rate number of deaths in a year per 1,000 population

Infant mortality the number of babies out of every thousand that dies before the age of one

Demographics the statistics of a population e.g. age, income, education

Demographic transition model the transition of high birth rates and death rates to low birth rates and death rates that occurs as part of the economic development of a country from a pre industrial to a post industrial economy

Migration the movement of persons from one country or locality to another

Push factors things that make people want to leave an area

Pull factors things that encourage a person to an area

Immigrant a person who leaves one country to permanently settle in another

Migrant a person who leaves his/her country of origin to seek residence in another country

Emigrate when a person leaves there country of origin to settle in another country

Migrate whne a person moves from one country to another and settles there 

Refugee a person who has been forced to leave his/her home because of fear of persecution

Dependency ration the ration of people who defined as dependant (under 15 years old and above 64 years old)

Population pyramid a bar graph showing the population divided into males and females in different age groups

Census the process of obtaining information from every member of a population

Policy  a plan of action adopted by a individual or a social groups

Aging population occurs when the average age of a population is getting older

Life expectancy the average number of years a person is expected to live

Replacement rate the total fertility that exactly balances births and deaths, so the population growth is zero

Exponential growth  a change in population that is proportional to the size of the population


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