Compléter PopulationVersion en ligne Unit 4 par Elena B 1 population birth density subtract emigrants changing Death immigrants size migrate away decreases add into census natural increases death A is all the people that live in a certain place . Governments use a to count the population and to collect information about the people living in a particular place . Demography is the study of human populations . It includes : , composition , distribution , , growth . Population is constantly . Babies are born , people die and people . Immigrant is a person who moves an area . Emmigrant is a person who moves from an area . Absolute population is the number of inhabitants in an area . Natural increase is the difference between the number of births and the number of deaths - > ( Birth Rate ? Rate ) . Positive natural increase - the rate is higher than the death rate . As a consequence , the absolute population . Negative natural increase - the rate is higher than the birth rate . As a consequence , the absolute population . To calculate the actual increase , we the number of to the increase and then the number of .
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