Question

population density is calculated by ______.
a. dividing the number of organisms in a region by the land area
b. multiplying the number of organisms in a region by the land area
c. dividing the land area by the number of organisms in the region
d. by subtracting the land area from the number of organisms in a region

please select the best answer from the choices provided

a
b
c
d

Explanation:

🆕 New Concept Discovered: Population Density
How crowded a specific area is with organisms.

Step 1: Understand the concept of density

Density measures how tightly packed something is within a given space. In ecology and geography, population density describes how crowded a region is with living organisms.

Step 2: Identify the formula

To find out how crowded an area is, we calculate the average number of individuals living in each unit of space (such as per square mile or square kilometer).

The mathematical formula is:

$$ \text{Population Density} = \frac{\text{Number of Organisms}}{\text{Land Area}} $$

This means we divide the total number of organisms by the total land area they occupy.

Step 3: Match with the given options

• a. dividing the number of organisms in a region by the land area (Matches our formula)
• b. multiplying the number of organisms in a region by the land area (Incorrect operation)
• c. dividing the land area by the number of organisms in the region (This is the inverse, which measures area per individual)
• d. by subtracting the land area from the number of organisms in a region (Incorrect operation)

Answer:

A (dividing the number of organisms in a region by the land area)