1.Glucose is the cell's main source of energy
Answer:
It delivers oxygen , food , and other materials to cells and it is one of the primary role of blood than it attends other roles .
B, C and D. Though if the question wants you to pick one I would go with C
<span>People with slow recovery heart rate are more at risk for heart attack.
-false</span>
Answer:
The immune system
Explanation:
The immune system is affected when the body is deficient of vitamins
