Population Size Essay Example for Free

Population Size EssayExplain the four factors that produce changes in community size. What do you predict will happen to the nutria population after all the bring is depleted of the nutrias food resource? at that place are basically four factors that affect the population of a certain area (e. g. a country). These include the birth rate, the death rate, immigration and emigration. These factors are the ones which at a time affect the number of individuals in a certain area (Halifax Regional School Board, 2007). The first factor is the birth rate, which is the number of live births in a year for a specific place. This factor tends to increase the population size as it increases the number of individuals in a certain area. Consequently, the birth rate is touch on factors such as nutrition, fertility, attitudes about abortion, labor value of children, government policies, social value, and of the culture in the area. The second factor that affects the population size is the dea th rate, or the number of deaths in a year for a certain area. This factor affects the population size decreasing the number of individuals in the population.This is touch on by factors identical disease, war, medical advancements and technology, health care, development of transportation, and of nutrition. The next factor is the immigration or the number of people moving into an area or a country. This factor is affected by other factors which are the characteristics of a place which tends to attract people to it. These are known as the pull factors. The last factor is the Emigration or the number of people leaving a country. This is also affected by the characteristics of an area that causes them to leave it, or the push factors.In the case of the Nutria population, if the land is depleted, meaning all the resources induct been consumed, it could greatly affect the rate of population decrease. This is because the necessities for the population to survive are all gone, so in ord er for them to survive, they have to leave and find a suitable place for them to get those resources. Some of them may die because of the lack of resources, and definitely some of them would go to other areas where they arsehole get the necessary materials to sustain their lives.