You are presented with the question "What is the average number of individuals per unit of area or volume?" and the following answer choices: 
- population divided by class
 - population divided by area
 - solid, liquid, gas
 - biological diversity
 - competing for resources
 - population divided by income
 - population divided by wealth
 - Something that makes plants green

Now knowing that population density is the average number of individuals per unit of area or volume and density is the population divided by the area, choose the best answer.


 

  population divided by area       