Question

if there are 500 oak trees in a forest covering 50 square kilometers (km²), then the population density is ______.
○ 10 trees per km²
○ 100 trees per km²
○ 50 trees per km²
○ 5 trees per km²

Explanation:

Step1: Recall population density formula

Population density = $\frac{\text{Number of individuals}}{\text{Area}}$

Step2: Substitute values

Number of oak trees = $500$, Area = $50\ km^{2}$. So, population density = $\frac{500}{50}$

Step3: Calculate

$\frac{500}{50}=10$

Answer:

10 trees per $km^{2}$ (i.e., the first option)