A. What the past can teach us
1) It was quite necessary not only for Buck, but also for others struggling to survive in the wild North. If he hadn't killed Spitz it it could have been very dangerous for others because he was very aggressive due to the hunger. Even though he was the leader, blinded by hunger he could do anything to survive, forgetting about the rest of dogs.
2) If he hadn't died he could have get many other innocent lives, like he had done to Curley. This character yielded to the external conflict of the harsh wild conditions, and his instings were much more powerful than his sense of justice so he could have bring harm until he reached his own safety.
Aggregation - a group of things that have been brought together
Degradation - making something weaker or of less importance
Indignantly - feeling angry at something that you view as unfair
Infallible - Incapable of doing something wrong
1. I looked out of my bedroom window to the horses frolicking through the meadow.
2. This bank accepts deposits from children of any size, even elementary school!
3. The professor continued to make more and more astounding comments as he rose from his desk.
4. Yesterday, the landlord told all of the tenants that he was raising their rent.
5. My mother gazed with dismay as the contents of the broken jars oozed out onto the floor.