depth is the answer for this :)

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Musical Instruments: History, Technology, and Performance of Instruments of ...
By Professor of Musical Acoustics Murray Campbell, Murray Campbell, Clive A. Greated, Arnold Myers, Senior Lecturer in Music and Director Arnold Myers
Answer:
Certain materials help to convey certain moods and and make an art piece look the way you want it to.
Explanation:
Answer:
C. The "skeleton that holds a piece of music together.
Explanation:
The reason that they have done this (this is a theory created by Egyptologists) is so the dead pharaoh could symbolically climb the sides of the pyramid, make his way to the sky, and live forever. The pyramid also represented the rays of the sun.
