Fact 1: Population density is the average number of individuals per unit of area or volume.

Fact 2: Another measure of growth is population density.

Given the two facts above, answer the question "What can be determined by the average number of people per one unit of area?" with the following options: 
- hygeine
 - emissions
 - animals
 - growth
 - forces
 - health
 - education
 - people


 

    growth     