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Survival of the fittest, only the strong survive, scientists today still believe, as Darwin did, that natural selection is one of the major mechanisms by which evolution, as least theoretically, occurs. Charles Darwin observed that within a particular animal or plant species, there are various colors, shapes and other traits. Along with this observation, Darwin contended that in nature the weaker varieties of animals and plants are ‘killed off’ by the stronger varieties due to their better ability to compete for

When Charles Darwin first published On the Origin of Species in 1859, he was certain that the fossil record would eventually substantiate his theory. After all, if Darwin was correct, there should be a continuum of organisms beginning with the simplest life form and eventually progressing into every other type of creature. One by one, certain fossils were discovered and proclaimed by those who supported Darwin’s theory to be “missing links.”