lexiemornelas
19.12.2020 •
English
Which one of the following may act as a respiratory surface in animals?A.spiracles.B.bronhus.C.skin.D.trachea
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Ответ:
D
Explanation:
Ventilation of the lungs in mammals occurs via the respiratory centers in the medulla oblongata and the pons of the brainstem. These areas form a series of neural pathways which receive information about the partial pressures of oxygen and carbon dioxide in the arterial blood.
hit the heart
Ответ:
D
Explanation: the author tends to like certain words meanings and sounds