First question is d
Second question is b
Hope it helps
Does the weather really affect mood?
methods for taking vital signs :
respiration, pulse, skin,pupils,blood pressure, and pulse oximetry.
Answer: It enters the right atrium through the right ventricle.
Explanation: . The right ventricle pumps the blood to the lungs where it becomes oxygenated. The oxygenated blood is brought back to the heart by the pulmonary veins which enter the left atrium.
