If there are only a few remaining members of an insect species living in one area, which would most likely cause this species to become extinct?

the introduction of new predators to the insects’ environment
a genetic mutation in an individual that causes it to be very small
a disease that causes a mother insect to die shortly after laying eggs
the introduction of a new food source to the insects’ environment

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