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Identify how we determine population size in a closed population.

A. Initial population size plus births minus deaths plus immigrants minus emigrants
B. Initial population size minus births plus deaths
C. Initial population size plus births minus deaths
D. Initial population size plus births plus immigrants
E. Initial population size plus births minus deaths minus immigrants minus emigrants

Answer :

The population size in a closed population is determined by adding the initial population size, births, immigrants, and subtracting deaths.

Let's break it down step by step:

1. Initial population size: This is the starting number of individuals in the population.

2. Births: This represents the number of individuals born within the population during a specific time period. It is added to the initial population size.

3. Deaths: This represents the number of individuals who die within the population during the same time period. It is subtracted from the sum of the initial population size and births.

4. Immigrants: This refers to individuals who move into the population from another population. It is added to the sum of the initial population size, births, and deaths.

5. Emigrants: This refers to individuals who move out of the population to join another population. It is subtracted from the sum of the initial population size, births, deaths, and immigrants.

By applying these steps, you can determine the population size in a closed population using the formula:
Initial population size + births - deaths + immigrants - emigrants.

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