Abdominal breathing occurs when the abdomen rises and falls with each breath but the chest does not. If a person is breathing abdominally, what would this suggest?

The correct answer is "b"

Air enters through the nose (and sometimes the mouth), moves through the nasal cavity, the  pharynx, the  larynx, enters the  trachea, moves through the  bronchi  andbronchioles  till the alveoli.

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Your answer is water because there is combined mass of water found on, under, and over the surface of a planet. your answer is water.