Which of the following would most likely happen if a new primary consumer was introduced to the ecosystem?

a)there would be a decrease in consumers
b)there would be an increase in photosynthesis
c)there would be a decline in the populations of primary producers
d)there would be a decrease in carbon dioxide

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