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Unformatted text preview: factors. Emigration is people leaving a country for various reasons. Push Factors - Social and economic factors, natural hazard, education opportunities, political instability, war, and others. The factors that affect population size in the video are birth rate and death rate. The female Nutria has the ability to give birth to up to 40 young in three years, with the young having the ability to reproduce at six months in age. This would give them the ability to flourish and build a much higher population. The death rate would be in regards to the vegetation population that the Nutria use as a food source. When the food source is depleted one can expected to see the population decline due to death....
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- Fall '09