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Why do airlines sometimes advertise last-minute airline ticket sales at low prices? What economic principle are they applying?
Breathing
The process of inhaling oxygen and exhaling carbon dioxide from the atmosphere, essential for life.
Spirometer
A device used to measure the volume of air inhaled and exhaled by the lungs.
Lung Volume
The total volume of air that the lungs can hold, varying with different phases of the respiratory cycle such as inhalation and exhalation.
Rhinoscopy
The examination of the nasal passages and the interior of the nose using a rhinoscope.
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