Question

Describe population change with a flow model

Answer 1

Answer:

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Explanation:

Population trends

The change in total population over a period is equal to the number of births, minus the number of deaths, plus or minus the net amount of migration in a population. The number of births can be projected as the number of females at each relevant age multiplied by the assumed fertility rate.

Answer 2

Population change with a flow model

• Birth, death, immigration, and emigration rates all impact population growth rates.
• Natural population change is determined by subtracting deaths from births, while net migration is determined by subtracting emigrants from immigrants (people moving to the country) (population moving out of the country).
• The simplest method of calculating population size is to count every person present in the habitat. However, this approach is frequently not practical from a logistical or financial standpoint, particularly when researching huge environments.
• Quadrats and the mark-recapture technique are frequently used by ecologists to assess the size and density of populations. A population's distribution, or dispersion, of the individuals that make it up, can also be used to describe it. Individuals may be dispersed uniformly, randomly, or in clusters.

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