''Dat Buck learn for sure as queek as anyt'ing.''
Hal is hitting Buck with a club because he is not pulling the sled. This relates to the survival of the fittest because the dogs are too tired to pull the sled and the dogs need rest but Hal just thinks their being lazy. This shows that Hal is not adapted to this environment and is inexperienced with dogs.
''The ice is going to break any moment.I wouldn't risk my carcass.''
That's because your not a fool, I suppose.''said Hal.''All the same, we'll go on to Dawson.''
Buck is pulling the sled. In the beginning of the novel Buck was learning fast and was adapting to the wild. This relates to the survival of the fittest because if Buck wasn't a fast learner it would have been hard for him to survive.
Buck is fighting Spitz. This relates to the survival of the fittest because in order for Buck to survive he needs to protect himself.
John Thornton is giving Hal,Charles,Mercedes advice that the ice is going to break but they still wanted to go. This relates to the survival of the fittest because Thornton has more knowledge of the wild and is adapted to that environment. Charles, Hal, and Mercedes aren't adapted to that environment so if they want to survive they should take the advice.
These are all of Charles, Hal, and Mercedes dogs.They have 17 dogs which is way too much to feed. This relates to survival of the fittest because this shows that they don't know what they are doing and it gives us an example of how they are not adapted to the wild.
The dogs could not move the sled because Charles, Hal, and Mercedes overloaded the sled.This relates to the survival of the fittest because it shows that they are inexperienced. If they were experienced they wouldn't have overloaded the sled.