Harvard professor E.O. Wilson (b. 1929) proposed a two-idea suggestion for understanding biology. All organic processes are ultimately obedient to the Laws of Physics and Chemistry. Most scientists believe that all living systems and processes evolved by natural selection. This emphasizes the importance of evolution and natural selection to understanding life on Earth today. Natural selection is based upon the principles that:
The process of natural selection through time can be easily observed through the fossil record and by observing the adaptations, complexity, and diversityDiversity:
The variety of species in a sample, community, or area. of living species. For more discussion on this topic, see the section How Evolution Works: Natural Selection.