What is a central idea that emerges over the course of the passage from Chapter 5? A. Those who can’t learn from others and their mistakes are not likely to survive in the wild. B. The natural world is unforgiving, but humans have the knowledge and skills to cope. C. Humans and animals working together as a team can accomplish many things. D. It only takes one mistake to start a series of events that can end in disaster.

Which statement best describes the effect of the metaphor on the excerpt's meaning? o a. it compares the sloshing liquid to a river of water able to push apart the sidewalk o b. it makes the frozen crystals seem like friends to the city to contrast with what a deceitful foe they are. o c. it compares the frozen crystals to delicately lacy snowflakes having arn unexpected strength o d. it likens h20 molecules to hexagonal crystals, which are actually larger than people imagine.