Overproduction
more offspring are produced that can survive
Bugs lay hundreds of eggs
differences occur among produced of the same species
some moths are dark colored, some are light
because of overpopulation organisms must compete for food
male lions compete for territory
individuals with traits that give them an advantage are better able to compete
birds eat dark moths more than light moths because they can see them better on light trees
After millions of generation of selection of new species May form
After millions of generation of selection of new species May form