What name is given to the condition of stability enabled by a set of processes such as those involved in the maintenance of internal body temperature?
A. respiration
B. metabolism
C. homeostasis
D. metamorphosis

Awater-filled u-tube manometer is used to measure the pressure inside a tank that contains air. the water level in the u-tube on the side that connects to the tank is 5 ft above the base of the tank. the water level in the other side of the u-tube (which is open to the atmosphere) is 2 ft above the base. determine the pressure within the tank.