Made of cells <span>use of energy </span> <span>growth </span> <span>respond to stimuli </span> <span>exchange of gasses </span> <span>excretion </span> <span>limited life span</span>
Individuals of a species are not identical, Traits are passed from generation to generation, more offspring are born that can survive,and only the surviovrs of the competition for resources will reproduce.
