Maybe B, C, and E but not really sure.
The answer among these works that features a flute with a delicate, "breathy" sound in a relatively high register is Concerto for Orchestra by Bela Bartok.
D is the correct answer.
In the badly drawn diagram attached, you will find the <em>yellow</em> represents wavelength, which is the distance between identical points on consecutive waves.
The <em>green</em> represents the amplitude, which is the distance between the origin (middle) and crest/trough (top/bottom)
No, that is False. They normally occur in the layer called the Troposphere. The Troposphere is where all the plains and the jets fly. The Mesosphere is too high,
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