¿Qué bioma ilustra? (IT)
(5 Points) Inches 30 28 26 24 22 - 20 18 16 12 10 8 2 J F M A M J J A S O N D Desierto Tundra Bosque Pluvial Tropical Pradera
Veins have a much lower blood pressure than arteries. which of these prevents backflow of blood in veins? a. pressure applied by the heart b. one–way valves in veins c. thin muscular walls of veins