When a musician strums a guitar, the vibration of the strings creates sound waves that human ears hear as music. When a guitar string is plucked, it moves a certain distance, depending on how hard the ...
Similar to the human larynx, a bird’s vocal organ – or syrinx – consists of folds of tissue in the passage that connects the lungs to the throat. As the bird expels air, these folds open and close to ...
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