Misunderstandings, poor communication, lack of planning <span />
Answer:
All that apply a, b, c, d, and e
Explanation:
<span>Veins are located near skeletal muscles so as you move, the contraction of those muscles push the blood along. Larger veins have valves in them so blood can't flow backwards.Breathing exerts pressure on the veins in the chest and force blood to heart. I really hope that this helped :D</span>
