The origin of life on earth and the evolution of life is a very controversial topic. There are many different theories of how life began and evolved into what it is today, and people have many very different beliefs as to how this happened. Charles Darwin’s theory of evolution makes the most sense and is the most probable theory to believe. Darwin’s theory is that all life is related, and that different species all come from the same common ancestor and they have evolved over time (The American Heritage). Natural Selection, gradualism, and adaptations all are supportive of Darwin’s theory of evolution.
Natural Selection, or “survival of the fittest” is a major part of Darwin’s theory of evolution. Natural selection occurs when an organism develops with an advantage to their survival, and they pass it on to their offspring making a new advanced, or evolved, species (The American Heritage). The organisms without the advantage would eventually die off over time, leaving only the advanced organisms to make up the species. All the species that couldn’t adapt to the new surroundings would be gone forever. Darwin’s theory suggests that evolution happened over a great deal of time, and it was not something that could happen over night. Along with natural selection proving that is takes time for an organism to evolve, the concept of
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These modifications assist in accomplishing survival for organisms in their natural habitat. Rather than extinction, species have the capability to modify their feature in such a way that they can sustain life. Because of the evidence of species’ adaptations, Darwin’s theory of evolution is a great explanation of how life began. Evolution has a strong position in comparison to other theories of how the world began, but there are still people who have stronger beliefs towards other theories much different from natural selection or Darwin’s