Which best explains why replicating an experiment should be done by someone other than the person who originally did the experiment? It shows that the results are the same using different methods.
It shows that the experiment is easy to do.
It shows that the results are as expected.
It shows that the experiment is designed properly.

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