"They told us up above that bottom was dropping out of the trail and that the best thing for us to do was to lay over."
"They told us we couldn't make it, but here we are."
"They told you true, the ice will drop out at any moment.
"Get up there, Buck! Hi! Get up there! Mush on!"
Hal, Charles, Mercedes, and the dogs make it to White River. The dog are tried, but Hal wants to go over the river. This is a scene of ignoring advice. This connects to survival of the fittest because, this shows how they can't take advice, and because of this they can't adapt.
¨I´ll show you!¨
Hal, is bragging that they made it when they were told by others they weren't going to make it. But as soon as he says that, John Thornton walks into the sence, and tells them otherwise.
Hal, doesn't care what John has to say, and tells his dogs to mush on. In result Buck refuses to move, while the other dogs start to move.
¨You poor devil.¨
Buck knows that if he goes on that ice, it will drop out under them. Hal is to foolish, and filled with to much pride to go back, so to get Buck moving he starts to beat Buck with the club. This scene connects to instinct. Instinct connects to survival of the fittest because it's one of Bucks instinct to sense danger.
John see this madness, and fights Hal. In the end John wins and saves Buck, they watch as the others make there way across the river.
While the others are crossing the river, the ice falls out from under them and they go under.