Natural selection means that only the fittest survive. The fittest are usually defined as those with the characteristics, or adaptations, that allow them to survive longer in a certain environment....
Natural selection is the process of certain animals being more successful than others and thus reproducing more. It is the driving force behind evolution as we currently understand it.
Natural selection means that only the fittest survive. The fittest are usually defined as those with the characteristics, or adaptations, that allow them to survive longer in a certain environment....