Which is the metric unit for the amount of a substance? Question 18 options: ampere kelvin mole pound

Which of the following is not a way in which a vascular plant's xylem and phloem are similar?

Which heredity condition causes a buildup of mucus in lungs and pancreas? a. cystic fibrosis b. heart disease c. huntington's disease d. sickle cell anemia

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