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Because in photographs it can be zoom out and not really seen.
Answer:
Human Anatomy is a study of the human body as a structure. Human anatomy is essential to art because it reflects the movement of the body in a true form. It is significant for an artist to study human anatomy because it helps in understanding the muscular and skeleton surface of the human body.
In order of the blanks:psychological and emotional preparation, vocal characterization, movement and gesture, and role analysis
Usually, you have a lead guitar and another guitar player, a bass guitar, keyboard/synth, a drumset, and the vocalist. Old rock bands, like Earth Wind and Fire, used to have brass instruments (trumpet and trombone, occasionally saxophone[woodwind]) as part of the instrumentation. It depends on what era of rock you are looking for, but this is the most common instrumentation. Hope this helps! :)