You are presented with the question "What is is the average number of individuals per unit of area or volume?" and the following answer choices: 
- solid, liquid, gas
 - Earth orbiting the Sun
 - competing for resources
 - measure of growth
 - more abundant
 - it keeps an organism warm
 - fur and fat
 - competition

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


 

    measure of growth     