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Multiple Choice
In population ecology, which expression correctly calculates population density for a species in a defined area?
A
Number of individuals multiplied by area
B
Birth rate plus death rate
C
Number of individuals divided by area (e.g., individuals per )
D
Area divided by number of individuals
Verified step by step guidance
1
Understand that population density is a measure of how many individuals of a species are found within a specific unit of area.
Recall the formula for population density, which is the number of individuals divided by the area they occupy.
Express this relationship mathematically as: \(\text{Population Density} = \frac{\text{Number of Individuals}}{\text{Area}}\).
Recognize that this formula gives a value such as individuals per square meter (\(\text{individuals} / m^{2}\)), which standardizes the count relative to space.
Note that multiplying the number of individuals by area, adding birth and death rates, or dividing area by number of individuals do not correctly represent population density.