The theory of evolution seeks to explain the origin of life on Earth and the origin of different species. Despite the fact that most of the scientific community has regarded it as fact for more than a century, a large number of people still dispute the theory of evolution, and various public controversies have resulted from this disagreement.
According to evolutionary theory, life began billions of years ago, when a group of chemicals inadvertently organized themselves into a self-replicating molecule. This tiny molecule gave rise to everything that has ever lived on the planet. Different and more complex organisms grew from this simple beginning through mutation of DNA and natural selection.
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