Explanation:
because the pressure exerted by artery is more than that of vein due to its narrow lumen and thick walls...causing it difficult to clot.
Answer:
Ectotherms warm their bodies by absorbing heat from the surrounding environment, whereas Endotherms produce heat by their metabolic activities. • Ectotherms have large variations in normal body temperatures while endotherms maintain their body temperature in a fairly constant value
Explanation:
Answer:
Motion is a change in position measured by distance and time. Speed tells us the rate at which an object moves.
Answer:
the cell membrane is a cell structure that controls which substances can enter or leave the cell.
