A true statement that includes all the following terms -runoff
-non point source
-pollution
-precipitation

What feature of cell theory is best demonstrated in the image

The third stage of cellular respiration is (2 points)

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