Discretionary calories<span> are excess </span>calories<span> to enjoy once your required nutrient needs are met.</span>
Pharyngotympanic tube. The eustachian tube is a canal that connects the middle ear to the nasopharynx, which consists of the upper throat and the back of the nasal cavity. It controls the pressure within the middle ear, making it equal with the air pressure outside the body
Im gonna D because its the only one that actually sounds helpful so makes the lungs able to fill more completely etc, etc
