It’s not a consumer what eats it is a primary consumer
Answer
C. Electron transport chain
The cell grows,then separates,then prepares for mitosis
A relatively small blood pressure gradient is generally insufficient to move blood through the veins under given conditions, thus venous return must be facilitated by valves within veins and two "pumps." ... As skeletal muscles contract, veins are squeezed to help propel the blood toward the heart.