Find your added subjects in My Bitesize. A costume is what a performer wears on stage. Everything the performer wears, including wigs and make-up, has to be carefully considered by a costume designer.
Ultrasound close ultrasoundSound with a frequency greater than 20,000 Hz (20 kHz). waves have a frequency higher than the upper limit for human hearing – above 20,000 Hertz (Hz). Different species of ...
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