D. Watershed - a watershed is the area in which runoff, rivers, and streams run into a larger body of water
The answer is oropharynx. The oropharynx is the center some portion of the pharynx (throat) behind the mouth. It incorporates the accompanying: Back 33% of the tongue. A delicate sense of taste. Side and back dividers of the throat.
An allergy
An allergy is a disorder caused
by an abnormal reaction to a harmless antigen in the environment. These
diseases include food allergies, hay fever, atopic dermatitis and allergic
asthma. Symptoms may include, a runny nose, shortness of breath, swelling red
eyes, or sneezing. Non-allergic individuals tolerate allergens without problems.
The two main types of allergic reactions are immediate hypersensitivity and delayed
hypersensitivity.