In all parts of the world, both past and present, humanity seeks answers to how the earth and its complex life forms formed. Many theories have emerged over the years, but the most popular one is the theory of evolution. Evolution is now taught in science classrooms around the world, the concepts based on Charles Darwin's theory regarding evolution and natural selection. The scientific community has accepted evolution based on the way the earth took shape. however, since no one was present at the time of the creation of the earth, no one knows for sure, but there is a theory that explains how, why and when, and that is the creation. That there is a supreme force: God. Neil A. Campbell, PhD in plant biology from the University of California, and Jane B. Reece, PhD in bacteriology, also from the University of California. They and their colleagues discuss the theory of evolution at length in their Biology textbook. In the textbook they discuss Charles Darwin, who was an English naturalist who spent his life studying the origins of the earth and all of its complex life. Darwin is known as the father of evolution. “He traveled to the Galapagos Island in the Pacific Ocean, on HMS Beagle. This is where he studied the adaptation of various plants and animals” (qtd in Campbell et al. 441). At the end of his journey he returned home and wrote the book On the Origin of Species. Through natural selection or the preservation of favorites in the struggle for life (Campbell et al. 441). According to Campbell, natural selection is the driving force behind the theory of evolution. Over time, natural selection can force more and more species to adapt to environmental changes. Evolutionists believe that all species... center of paper... results. Evolution violates this fundamental premise because it cannot be directly observed or repeated. Evolutionists argue that genetic variation driven by natural selection is observable evidence. for evolution. However, this is a post-hoc error. Such variation only demonstrates that variation exists between species. It does not show that new genes or information have formed. No species has been observed transforming into another, currently or in the fossil record. Certainly organisms adapt through microevolution, but that does not mean that they will eventually become a separate species. Although scientists claim to find evidence for evolution in both homology and the fossil record, counterevidence has emerged leading scientists to search for irreducible complexity and its significance in the evolution debate. For this reason evolution remains only a theory.