Answer: Ambulatory monitoring of the electrocardiogram in 100 healthy 14 to 16 year old boys showed heart rates ranging from 45 to 200 beats/minute during the day and from 23 to 95 beats/minute during sleep.
A normal blood cell is round and almost donut-like in shape. Sickle cells are hard, rigid, and shaped in a curve.
Answer:
Explanation:
Keeping a mental list of goals.