Evolution is the idea established by Charles Darwin that living things have a common ancestor., Natural selection is a process where the organism better suited for its environment is considered to have a high fitness.. , Birds having different sized beaks is an example of variation within a population. , The fitness of an organism is determined by its ability to survive AND reproduce. , Variations allow organisms in the same population to compete for resources. ,

Leaderboard

Visual style

Options

Switch template

Continue editing: ?