works of naturalism often address the theme of survival of the fittest. give examples that show how london's story develops this theme. what message does the story convey about the survival of the fittest

Naturalism not only maintains that the environment is deterministic (see Determinism, above), but indifferent. The environment does nothing to help its inhabitants; in fact, it is coldly indifferent to their existence and struggle. In "To Build a Fire," the Yukon would be bitterly cold without the man, as well, and it does not cease when the man struggles to stay alive. This indifference makes survival itself a critical goal for naturalist characters. As the story goes on, the man changes his goal from reaching the camp, to warding off frostbite, to merely staying alive. Naturalism thus elicits profound conflicts, man versus nature being one of them. It is of course the dog that survives beacause its instinct and physical abilities are superior to man's intellect.