Population density is the average number of individuals per unit of area or volume, and population densities affect the balance of the environment. Given these facts, what do the average number of individuals per unit of area or volume affect among the following options:
- that material's properties
 - our landscape
 - balance of the environment
 - death and devastation
 - important habitats
 - swamp vegetation
 - the environment
 - Animal survival


 

   balance of the environment      