Darwin was an English naturalist, who developed the theory of evolution through natural selection, to explain how the millions of species that inhabit the earth originally came into being. He published “On the origin of species” in 1859, in which he described his theory of evolution through natural selection.
Darwin studied and observed a variation of plants, fossils and animals on the Galapagos islands and found they resembled modern species, and that most the animals and plants had distinct differences. He noted several species of finches that varied, and that they had important differences to each other. The size and shapes of their bill structure was a significant difference. He noted that these adaptations varied