Explanation:
1. Family
In this excerpt, the boys are talking about a possible consequence for people who reveal the secrets. They decide that killing families would be a great deterrent. However, they realize Huck doesn't have any family worth killing. This shows how important family is to the characters and how little Huck's father was valued in society.
2. Deception
In the excerpt, Helmer talks about how Krogstad had to use a "cunning trick" and "how he has to wear a mask". These are all indicators of deception. Deception is a lie or a trick.
3. gender differences
Helmer says, "no man would sacrifice his honor." Nora says, "It is a thing hundreds of thousands of women have done." In this excerpt, they are showing the differences between a man and a woman.
4. Supernatural beliefs
In this excerpt, the speaker is comparing a sound a ghost makes. He also talks about getting some bad luck. Then does a few actions that would hopefully ward off any evil coming his way. The superstitious nature of his behavior is evidence of supernatural beliefs.
A biological/chemical substance dangerous to humans/environment
