The tickbird and the rhinoceros can often be seen together roaming the plains of africa or asia. the tickbird uses the rhinoceros for transportation and also eats the ticks off the rhinos for food. the type of symbiotic relationship that exists between the tickbird and the rhino is

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