Measuring your pulse at the wrist or neck is which type of heart rate measure method? A. EKG
B. ECG
C. Palpitation
D. Monitor

Which term defines one's age as measured by how well the body is working? chronological age biological age social age mental age

What is one way that cold and flu viruses spread? a. by transfusing contaminated blood b. by inhaling contaminated droplets c. by eating contaminated meat d. by drinking contaminated water

Why mature red blood cells has no nucleus