B. the carnivore will most likely survive because it has no natural perpetrators. but unless all of the producers and herbivores get completely wiped out it then it would have no food.
It should be able to survive if it has food.
The ATRIA are the superior chambers of the heart. These are responsible for the chamber for blood. while the VENTRICLES are in the inferior chambers of the heart. These are responsible for pumping blood the lungs and to the body.