What characteristic of a speech gives the audience the knowledge it needs to understand the ideas in the speech?

There are many characteristics of a good speech communication. These are articulation, pronounciation, speech disfluency, speech pauses, speech pitch, speech rate, and speech rhythm. However, among these, articulation is the most important part in the speech. It is because articulation means the way you pronounce each word and the way you express your feelings. Without good articulation, your speech cannot easily be understood and interpreted by your audience.

answer: "the beating heart symbolizes the narrator's conscience, or his sense of guilt and wrongdoing" so its b

explanation:

"to look at him, or hear him describe it, he had no guilt. however, poe decided to symbolize this man's subconscious guilt through the heartbeat."

yes they most likly are and have planed t try to bring human life and supplies there also(due to global warming and other harmful resorces)