Natural Selection - process by whch populations become adapted to the environment. The fitness of an individual is measured by how well its offspring reproduce - i.e. how many offspring that survive and reproduce does an individual produce Charles Darwin studdied and closly watched peppered...

Is evolution just a theory?? A basic argument used by creationists is that evolution is "only a theory and cannot be proven." This creationist argument is based on the false assumption that the only way to "prove" evolution is for someone to actually observe large evolutionary changes, f...