Explanation

The word evolution (L. evolvere) means to unfold or unroll or to reveal the hidden potentialities. In its broadest sense, evolution simply means an orderly change from one condition to another. For example, when the planets and the stars change in between their birth and death, it is called stellar evolution. When the matters, elements change in time, it is called inorganic evolution and when the changes are in the organisms (living things) over the course of generations, it called biological or organic evolution