Which of the following is true of the stage of a body of water? A. It is constant at all times of the year.
B. It is important only if the body of water is a watershed.
C. Bodies of water like rivers and ponds do not have a stage.
D. It needs to be measured frequently to get an accurate measurement of the water.

How does the closing of the ductus arteriosus and ductus venosus alter circulation in an infant? a. increases blood flow to the pulmonary artery and increases blood flow to the umbilical vein b. increases blood flow to the pulmonary artery and reduces blood flow to the umbilical vein c. reduces blood flow to the pulmonary vein and increases blood flow to the umbilical artery d. reduces blood flow to the pulmonary vein and reduces blood flow to the umbilical artery