The Call of NatureWhere does man come from? Scientists thought they had answered this simple but complex question with Charles Darwin's theory of evolution. According to him, living organisms evolved due to constant changes. Organisms that gained an advantage would reign, while those that did not would die. Jack London's books in the late 1800s brought this theory to life by using wild animals in a struggle for survival. In fact, there are many who prove that in order to survive, a species “must” have an advantage. In London's book, The Call of the Wild, the harsh description of the Klondike wilderness proves that to survive, life must adapt. London uses Buck as the first character to justify his theory because he conforms well to the hostile North. When he is with Judge Miller, Buck, pampered, never worries about his next meal or his next shelter; Yet while he is in the frozen Klondike, he has death on his heels. Until his body adapts to the hard work of the reins, Buck needs more food than other dogs. He must steal food from his masters to comply. If Buck continues his stealth work, he will survive. A second example occurs when Thorton owns Buck and Spitz, the lead dog, constantly guards the team in a dominant manner. Buck, if he is insubordinate, runs the risk of dying. He keeps a low profile, learning all of Spitz's tactics. Buck adapts to the circumstances until he eventually attacks Spitz in a struggle for dominance. By killing Spitz, he acquires a supreme air, and in turn an adaptation against the law of the fang. A third example appears under Buck's leadership. The young dog, like Francios and Perrault, cannot be up to the task of leading. Buck therefore behaves like a sled dog master, achieving the objectives of Francios and Perrault, in accordance with the team. The group clears snow reaching at least forty miles a day. Dogs spend a maximum of two weeks in the Klondike wilderness. In a way, Buck makes every person and every dog ​​safer. He adapts to the environment and the new position. In Call of the Wild, Buck must have a role to play in justifying London's theory. In the novel, London uses Mercedes, Hal and Charles, a group of very inexperienced and even less equipped townsfolk, to depict the likely fate of those who do not adapt. . In Skagway, the three have no idea what the Klondike holds. The well-dressed and well-fed team only wants wealth and glory. In their effort to