Food enters the body through the mouth where it is mixed with digestive enzymes from the these enzymes begin the digestion of into the bolus is propelled to the pharynx by the tongue. the closes over the upon swallowing to protect the respiratory tract from food particles.

Food enters the body through the mouth where it is mixed with digestive enzymes from the  saliva. These enzymes begin the digestion of starch into sugars. The bolus is propelled to the pharynx by the tongue. The epiglottis closes over the   tracheid upon swallowing to protect the respiratory tract from food particles

answer; ///i believe the correct answer is (aids) acquired immune deficiency syndrome;

c.more precipitation,but only when emission levels.