A. They live in the polar regions of the Northern and Southern Hemispheres.
I believe the correct answer from the choices listed above is option A. When a system is in dynamic equilibrium, the input of the system is equal to <span>the output of the system. Hope this answers the question. Have a nice day. Feel free to ask more questions.</span>
Answer:
Severe allergic response causes fluid loss from the blood, breathing difficulty and therefore, is life threatening.
Explanation:
The anaphylactic shock results from the type I allergic reactions during which the presence of an allergen triggers a severe response. It occurs since IgE antibodies are already present in the body. There is a release of histamine and other vasodilators. Vasodilation and increased permeability of the blood capillaries result in the loss of fluid from the blood. Constriction of airways of the lungs causes difficulty in breathing and weakens the heartbeat. Therefore, severe fluid loss from blood and constricted airways make it life-threatening.
