Post A 200- To 300-Word Response To The Following: Explain The Four Factors That Produce Changes In Population Size. What Do You Predict Will Happen To The Nutria Population After All The Land Is Depleted Of Nutrias Food Resource?
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The four factors that produce changes in population size are birth rate, death rate, immigration, and emigration.
The birth rate is figured by the amount of births per 1000 people per year. The death rate is the number of deaths per 1000 people per year. Immigration changes a population rate by adding more people to the population in that area. Emigration happens when people leave a population, which then decreases the size of the population in that area. The growth rate of a population is figured by the amount of births minus the amount of deaths.
The factor that is affecting the population size in the video is the birth rate. Since one nutria can have over 40 babies per year, and after the age of six months, the baby nutria can reproduce, these animals are having babies at a high rate, and they are becoming overpopulated.
After the land is depleted of the nutrias’ food resources, the nutria will have to relocate to a different area in order to survive. They will have to keep moving because every area they inhabit will end up the same way; they will eat all of the available food resource and will eventually run out.
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The changes in population size can be influenced by four main factors: birth rate, death rate, immigration, and emigration. Birth rate refers to the number of live births per 1,000 individuals in a population over a given period. It is affected by factors such as age structure, reproductive behavior, and access to healthcare and contraception. Higher birth rates tend to increase population size.
Conversely, death rate refers to the number of deaths per 1,000 individuals in a population over a particular period. Factors such as disease prevalence, access to healthcare, nutrition, and age structure determine death rates. Higher death rates decrease population size.
Immigration and emigration are the other two factors that impact population size. Immigration refers to the movement of individuals into a population, while emigration refers to individuals leaving a population. These factors are influenced by various socio-economic and environmental factors, such as labor opportunities, quality of life, and political stability. Immigration increases population size, while emigration decreases it.
Regarding the nutria population when all the land is depleted of their food resource, it is likely that their population size will decline. Nutrias, small semiaquatic rodents, heavily depend on vegetation as their primary food resource. If the land is fully depleted of their food source, there will be a scarcity of sustenance, leading to reduced birth rates due to decreased reproductive success and increased death rates due to malnutrition.
With a reduced birth rate and increased death rate, the population of nutrias will likely decline. Additionally, the lack of food resources may result in some nutrias exploring and migrating to other areas in search of sustenance, leading to emigration.
In summary, changes in population size are influenced by birth rate, death rate, immigration, and emigration. In the case of nutrias, if their food resource is depleted, it is predicted that their population size will decrease due to reduced birth rates, increased death rates, and potential emigration in search of food.