Why does travis kill eckels explain?

Travis kills Eckels in Ray Bradbury's "A Sound of Thunder" to uphold the consequences of actions and to maintain the integrity of the time travel expedition. Eckels's reckless behavior in the past disrupts the timeline, leading to catastrophic changes in the present. By killing him, Travis emphasizes the seriousness of their mission and the importance of respecting the rules of time travel. This act serves as a grim reminder of the delicate balance of nature and the repercussions of human actions.