There are approximately 30,000,000 white-tailed deer in the United States, which covers 3,536,000 square miles. What is the population density, rounded to the nearest whole number, for the white-tailed deer?
a.
2 deer per square mile
b.
4 deer per square mile
c.
6 deer per square mile
d.
8 deer per square mile

Population density refers to the number of people or animals per unit of area. It gives an estimate of how crowded an area is. Population density is obtained by dividing the total poulation of the given area by the land area which is expressed in terms of square kilometers or square miles. It can be calculated as follows.

Population density per square mile = total population / land area.

The number of white tailed deer in the United states is 30,000,000. The land area is 3,536,000 square miles. Therefore, by substituting the values in the formula of population density,

Population density of white-tailed deer = 30,000,000 / 3,536,000

= 8.48

=~ 8 deer per square mile.