Final answer:
Electrostatic effects are more pronounced in dry air than in moist air, and torn paper tends to be more attractive to a statically charged comb than cut paper due to its rough edges.
Step-by-step explanation:
The question relates to how air bubbles can form behind drywall paper or why it may pull away in some areas. However, the provided reference information is regarding an experiment on electrostatics and humidity, which typically involves understanding how static electricity can be affected by moisture in the air. According to the experiment, by rubbing a comb through your hair and attempting to use the static charge to lift paper pieces, you can observe that electrostatic effects are more pronounced in dry air compared to moist air.
This is because water molecules in the humid air can conduct electricity away, neutralizing the static charge. Additionally, torn paper may be more attractive to the comb than cut paper due to its rougher edges creating more points for the static charge to accumulate and act upon.