The average number of individuals per unit of area affect the balance of .
gravity the environment energy Earth orbiting the Sun an organism's body objects that have mass competition power
A B C D E F G H
Population densities affect the balance of the environment.
the average number of individuals per unit of area affect the balance of the environment.
The average number of individuals per unit of area affect the balance of . (A) gravity (B) the environment (C) energy (D) Earth orbiting the Sun (E) an organism's body (F) objects that have mass (G) competition (H) power