Signal molecules are responsible for regulating the allocation of resources in the body in response of times of stress. What is the approximate percent O2 saturation of hemoglobin in blood vessels returning from liver cells when the concentration of glucagon in the blood is high versus low?

In the united states there are strict fishing seasons and limits, but not all countries enforce similar laws. in bangladesh there are few if any fishing restrictions. what might be the reason for less restrictions in smaller countries like bangladesh? a) the united states is the only country worried about overfishing. b) the united states wants to limit the supply of fish to increase the price. c) bangladesh and smaller countries have an unlimited supply of fish in their coastal waters. d) small countries, such as bangladesh, are practicing subsistence fishing, taking only the fish needed to survive.