It can be caused by many things. Among them are war, disease, natural disasters, etc. The effects are borderline nice. It can lead to more land for humans, less issues with "going green" since there are less people mucking about with it, things like that. However, it can also result in the breaking of leagacies in clans of ancient familes or bloodlines being "tainted".
Actually, it is determined by Birth Rate, Death Rate, net migration, and maternal and infant mortality rates. Add these all up and you can tell whether or not there is negative population growth.
Sex.
Birthrate is the major contributor to Australia's population growth as immigration is tightly controlled.
More services available.
population and poor agricultural growth
causes of rapid growth of service industry in the country?
population and poor agricultural growth
birth death migration/emigration
It is called a limiting factor.
Competition for resources
industrialist and immigrants.
The industrial revolution. Factories and manufactures were located in the large cities, so the workers moved from the rural areas to the cities for jobs, therefore, population increase.
There are many causes of social instability. Some examples of the causes of social instability are; international tension, industrialization and population growth.