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During inspiration air passes into lungs due to:a)increased volume of thoracic cavityb)fall in pressure inside the lungsc) increase in the volume of thoracic cavity and fall in lung pressured)muscular expansion of lungswho will answer corretly i will mark them as brainlist!!! :D

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Due to this increase in volume, the pressure is decreased, based on the principles of BOYLE's LAW. This decrease of pressure in the thoracic CAVITY relative to the ENVIRONMENT makes the cavity pressure less than the atmospheric pressure.

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