68. A. The percentage of oxygen dissolved in plasma B. The percentage of oxygen transported as oryhemoglobin 69 A. The affnlty of oxygen to hemoglobin in Baguio City B. The affinty of oxygen to hemoglobin at sea level 70. A. Resistance to airfow in a bronchiole B. Resistance to airflow in the trachea Cor AUDEr

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