POPULATION

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Why does population change?

Gonzalo Barral

Spain

#	Jeux	Précision	temps
1	Gonzalo Barral 17 Octobre 2016	% 100	01:35
2	Eduardo Andrade 17 Octobre 2016	% 95	02:24

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Compléter POPULATIONVersion en ligne Why does population change? par Gonzalo Barral 1 increase born decreases average population die move dividing rate country grows higher fertility wars work Migration emigrants disasters families inmigrants area children Many factors can affect : people are or and people around to find or escape natural and . The is the number of children per family . The fertility rate in Europe is about 1 . 6 . This number is calculated by the total number of by the total number of . Natural changes in population can happen when there are more births in a country than deaths . This results in an in population . If there are more deaths than births , population . is the movement of people from one to another . People that live and work in one , but are from another country , are called . People that leave their country to live in a different one are called . When there are more inmigrants than emigrants , population . If the number of emigrants is than the number of inmigrants population decreases .