Lamarker Vs Darwin

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Charles Darwin was an English naturalist, geologist, and biologist best known for his contributions to the evolutionary theory. He was definitely not the only person who hypothesized an evolutionary theory. Lamarck, who was also a naturalist, supported that biological evolution came about and progressed aligning with the laws of nature. Lamarck’s evolutionary idea was the theory that the environment affects the form and organization of animals implying that when the environment changes it causes the animals to adapt according to the modification. The major changes in the environment of animals’ causes great changes in their needs necessarily leads to other changes in their activities. “If those needs become permanent, the animals adopt new …show more content…

Darwin and Wallace both shared the same theory of evolution by natural selection. They had similarities in that both went to South America to study the behavior of the different species. The two naturalists shared the same curiosity as to how the species diverged. The major differences between their theories were that while Darwin underlined the competition between individuals of the same species was the main reason for the species to survive and reproduce, on the other hand, Wallace insisted that the struggles of the environment and landscape are the primary concerns coercing the diverse species to acclimate to their environment or will become extinct. Thus, the discord between the two theories was Wallace's emphasis of acclimating to the environment for survival while Darwin's focus was on competition among individuals of the same species. Another difference distinction was that Wallace proposed natural selection to be a means of receptive mechanism which maintained the species acclimated to their environment while Darwin alluded to be only about the rivalry between the individuals for sexual selection. Even though evolution was proposed before Darwin’s “natural selection”, Darwin receives much of the credit of evolution due to the fact that he provided more data and logic regarding to the theory of evolution and natural selection. The evidence he provided made natural selection …show more content…

Darwin used fossil records, hybridism geographical distribution contributions as evidence to his theory. Lyell was one of the most outspoken advocates of the concepts of uniformitarianism, which held that the same geological processes that are happening today have existed largely in their current state throughout all of geologic time. From the uniformitarian perspective, it was obvious that the Earth must have existed for an immense period of time; the measured rates of geologic change, e.g. erosion and uplift, were far too gradual to create the today’s shape of Earth's surface without it taking millions and millions of years. Lyell's dispute for age not only persuaded Darwin, but it also greatly influenced his view on the origin of species by providing a time period large enough to make natural selection possible. Lyell cautiously avoided efforts to calculate Earth's age. This led some to conclude that he was actually indicating that Earth was limitlessly old. Darwin, however, was not so wise; he estimated that it took 300 million years to erode the Weald, a chalk deposit in southern England. Though Darwin only intended to provide a rough estimate in order to highlight the point, his statement became the subject of much controversy. “Those who think the natural geological record in any degree perfect, and who do not attach much weight to the facts and

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