Question

Which of the following samples has the greatest population density?

A.) 125,000 organisms in 2.5 mi^2
B.) 13,000 organisms in 1.0 mi^2
C.) 150,000 organisms in 4.0 mi^2
D.) 100,000 organisms in 0.5 mi^2

Answer 1

D.) 100,000 organisms in 0.5 mi^2
Population density is based upon the pop. # (organisms) ÷ area (sq.miles). So 100,000÷0.5 = 200,000 organisms/sq.mi.--> larger density than A), B), or C)

Answer 2

The right answer is D.

The density of a given population is calculated by dividing the number of inhabitants by the area expressed in km² (or in hectares).

Number of inhabitants ÷ area (in km²) = number of inhabitants / km²

A = 125000 organism/ 2.5 m2 = 50,000 organisms / m2

B = 13000 organisms / m2

C = 37500 organisms / m2

D = 200000 organisms / m2