Charles Darwin was a naturalist and he explains how we came to be in his book, The Origin Of Species New Interdisciplinary Essays. Nothing in the study of biology (the science that studies the functions of organisms) can begin to make sense without understanding evolution, which is the process of how different organisms developed to their current form throughout history) Charles Darwin explains the evolution of organisms through his theory of Darwinism. Organisms struggle for existence which is the process of survival. Competition is fierce between all species and they each need genetic advantages to survive. Any genetic variation possessed can be an advantage or disadvantage depending on the environment. For example, an organism that is red is less likely to survive in a green grassy …show more content…
This argues that different species adapt to their environment through mutations and this can also explain how a species can gradually evolve. An organism does not evolve in its lifetime, because species evolve as whole through variations. Whether the variation is in color, structure, or a physical trait, they allow us to tell a species apart from others. An example of this can be seen through any species, but Charles Darwin took close interest in observing mockingbirds when he was visiting the Galapagos Islands. The mockingbirds had subtle differences or variations in their color. Some had different colorings on the breast area and others had smudges around the eyes, this was a revelation. Darwin realized that although they were all of the mockingbird species, the varying colors meant they each belonged to a different island. This showed that there can be similar creatures with distinctions that make them indigenous to their region. The variations left Darwin with the impression that all species have a common ancestor, but over time, species change. The variations were unique to each island because the mockingbirds needed to adapt in order to survive in their natural