What Three Factors Can Affect Population Size?

Answer

There are three factors that can affect the size in population. First, the rate of births versus deaths plays a big factor. Immigration and natural selection are the other factors.
Q&A Related to "What Three Factors Can Affect Population Size?"
births,deaths, immanent/emigrants.
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Birth rate vs. death rate, immigration vs. emigration,
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"Natality, or birthrate, is defined as the number of children born in any given period of time. It is the number of live births per 1,000 people per year. Naturally, the amount
http://www.ehow.com/info_8732454_four-factors-affe...
3 factors. Food supply, more food more people its like that with humans and every other species. Sexual appetite ,if you will at times there is more rapid reproduction especially
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