The effect that this response has on the speaker is that the speaker’s mental state shifts more and more toward madness.
The raven is constantly repeating the same word - nevermore. In the beginning, the narrator just thought it was a weird coincidence that the bird should say that one single word, but as time passes by, the weight of that word becomes unbearable as the narrator realizes that this word can be applied to all of his questions. So as time goes by, the narrator becomes more and more depressed about not being allowed to see his beloved and thus he falls into madness.
Figurative - the channels are not literal or physical.
Answer:
To contradict the message conveyed by the main plot
A subplot can focus on another aspect of the protagonist, or it can follow the story of another main character and his or her development. It can drive home theme and it can aid in world-building. Subplots will enrich your novel and make your story a more compelling read.
Determine what types of information you have. Such as characters or numbers, you decide what information is associated with what. You take groups of related information and organize them into records with a field for each piece of information. Then simply process them until you have a database.