Answers

2016-07-20T06:43:00+08:00
Factors could change the density of any population: climate change, habitat reduction, increasing of populationa nd others.
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2016-07-20T13:58:55+08:00
Population can lessen by decrease of food and basic needs, also the diseases spread easily in urban overpopulated. With the overpopulation fertility rate also decrease ,overpopulation  could affect environment, pollution soil degradation, deforestation and loss of biodiversity with these population will be affected. 
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