Charles Darwin's Theory Of Evolution Through Natural Selection

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Charles Darwin was a 19th century naturalist who shaped the way we view nature and humanity. His theories of evolution completely reassessed how we understand the natural world through his ideas on natural selection. Darwin himself was largely inspired by a few other naturalists who predeceased him, mainly William Paley and Thomas Malthus, and it was their work, as well as his travels around the world, that led him to form his own theories and to change how nature, humans and biology are seen for generations to come.

Thomas Malthus was a leading economist and human ecologists during the Romantic period, and formed his principle of population that was largely defined by conflict, which eventually gave way to the development of evolutionary
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Darwin agreed with Malthus and Paley that there was an uneven ratio between population growth and growth of food sources, which in turn created a struggle for survival, and put in place checks that would eventually return the population to a sustainable rate. However, unlike Malthus and Paley, Darwin did not agree that it was God who implemented these checks, which inspired Darwin to move away from natural theologian explanations, and instead form his own ideology on natural selection (Darwin, 1871, pp.65). To begin with, Darwin argued that all species came from a common ancestor, and he described this by comparing it to the tree of life. This metaphor suggested that every species come from a common root, and eventually break off in branches, and in turn each of these branches break off into more and more branches; suggesting that each branch is a different species, and this is how different species can be very similar to one another, because they all come from the same branch and same root (Darwin, 2014, pp.81). From this, Darwin went on to explain how species evolve, which happens through natural selection. The principle of natural selection is that evolutionary change occurs through the variation of an individual/s in each generation, with the variation, if hereditary, will be passed on throughout generations, and eventually multiple …show more content…
This is when an individual/s of a species migrates to a new environment, and reproduces with a different species from a similar gene pool. This in turn will eventually create a new species, or subspecies, without competition or natural selection taking place (Darwin, 2014, pp.214). No matter the cause, whether it is through natural selection and competition, or migration, ultimately nature will kill off individuals and eventually entire species, that have unfavourable qualities, which are not advantageous to life. Individuals with advantageous qualities will survive and pass on their qualities to their offspring, while the unfavourable qualities will eventually die off. However, Darwin also noted that qualities neither useful or injurious, would eventually become fixed qualities, as they are not affected by natural selection. Nature will usually result in the survival of the

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