Organic evolution is defined as the sum total of adaptive changes from pre-existing or old form that have taken place over a long time, resulting in diversity of forms, structures and functions among organisms. The concept behind organic evolution is that all living things came into existence from pre-existing living things and that the various species have arisen by a gradual process of change over a very long period of time. The present day species have not always existed in the present form, but have arisen from preexisting ancestors.   EVIDENCE OF EVOLUTION There are many evidences to show that evolution has taken place. These are: Fossil records: A fossil…

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