As much as I would like to help you with something like this, I think that writing this should come from you. It's technically plagiarism and I would hate for you to get in trouble. Maybe you should take it step by step. I'm sure you've accomplished something in your life that you are proud of or at least remember it well. Start there and then see how far you can get. I'm always willing to make suggestions. :-)
Diffusion: Diffusion is the movement of particles from an area of higher concentration to lower concentration. The overall effect is to equalize concentration throughout the medium.
Osmosis: Osmosis is the movement of solvent particles across a semipermeable membrane from a dilute solution into a concentrated solution.
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.
Top-Down is used to refer to a situation in which decisions are made by a few people in authority rather than by the people who are affected by the decisions
Answer:
Summary of Deep Survival: In extraordinary circumstances, like accidents or catastrophes, some people survive and others die, such that sometimes things lead you to believe that the first ones die and the second ones survive; this book explains, using numerous stories of accidents and catastrophes, and by exploring the latest scientific theories – from neuroscience to the theory of chaos – what makes one person die and another survive.