Biology, 17.09.2019 22:30 natalie857123
What happens when the diaphragm contracts? a. the volume of the thoracic cavity increases. b. the diaphragm rises. c. the volume of the thoracic cavity decreases. d. the rib cage moves down.
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What happens when the diaphragm contracts? a. the volume of the thoracic cavity increases. b. the d...
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