What aspect of nature does Jack London often explore in his writing?

Jack London frequently delves into the conflicts that arise between nature and civilization in his literary works. His stories often depict characters who are in direct confrontation with the harsh realities of the natural world, emphasizing survival, instinct, and the primal forces that govern life in the wilderness. This thematic exploration is vividly illustrated in works such as "The Call of the Wild" and "White Fang," where the characters must navigate not only their own inner struggles but also the challenges posed by their environments. By highlighting the struggle against nature, London showcases the power of the natural world and the often harsh conditions that define human existence, marking a critical examination of humanity’s place within the larger ecosystem. This thematic focus distinguishes his writing and provides profound insights into the relationship between human beings and the natural world.