Radiometric dating is based on the idea that dating a man separated from wife
Choose: No Frames Layout Choose: Human Evolution Frames .
I have integrated this web page on human evolution into an electronic text, " Nature's Holism - Holism.
erectus (including the Java and Peking hominids - the archetypal Missing Link) and H.
 Natural selection, gene flow and random genetic drift (the random change in gene combinations with each generation) drive evolution, resulting in a change in gene frequencies within populations .
 Adaptation is genetically based and so leads to phenotypic changes that accumulate over time;  Speciation (species formation) evolves through reproductive isolation and (genetic) divergence of populations;  Genetic changes through natural selection lead to new species and eventually new taxa .
This environment has a living (other animals) and non-living component (e.g. Widgets A unique adaptation usually precedes the entry into a new niche .
Tool use by our early ancestors is one such adaptation.