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...

Evolution is the change in a gene pool of a population over time. It is the theory that groups of organisms change with passage of time, mainly as a result of natural selection, so that descendants differ from their ancestors. In order for this theory to hold true, some things must be observed. F...