The delivery of a speech helps the audience understand the topic, what you're talking about, and keeps the speech on track.
For example, if you were giving a speech on Romeo and Juliet, you wouldn't want to get off topic by giving information about Shakespeare's life instead of information and analysis of the play.
A hunter would protect himself from the bear by using a high powered rifle and a tree stand. The bear would protect itself from the hunter by climbing said tree and killing the hunter.
