Heat exchangers work in different ways in different animals. A heat exchanger is used to keep the brain cool. if the oryx is dehydrated and can no longer afford to lose water, its stops sweating. This causes the body temperature to rise .
anti freeze protein keep the blood from forming crystals in really cold water, eg. antarctic cod.
hibernation is prolonged torpor that occurs in winter. Over summer and autumn the animal creates a thick layer of body fat that will provide them with energy during hibernation period in winter.
Torpor is a phsiological state in which the metabolic state is lowered to save energy
Camouflage enables many organisms to blend in with their environment.
homeostasis is the maintenance of variables in a system within certain limits. when a organism is heathy and functioning well, it's systems are homeostasis.