Which of the Following Statements About the Sahara Desert Is

question 18

Multiple Choice

Which of the following statements about the Sahara Desert is true?

• A) Its western half was under the Atlantic Ocean until 2000 BCE
• B) All evidence indicates that it was never anything other than a vast desert region.
• C) At one point, it was an area that was green and flourishing with life.
• D) It contained no significant trade routes.
• E) It completely cut off Egypt from the rest of Africa.

---

Definitions:

Noise

Unwanted sound or signal that interferes with the communication, detection, or measurement of a signal.

Timbre

The characteristic of a sound that sets it apart from other sounds with identical pitch and loudness.

Perception

The process by which individuals interpret and organize sensation to produce a meaningful experience of the world.

Loudness

A measurement of the perceived intensity or volume of sound by the human ear.