Why does your ear make a rappid poping noise when the barometric pressure changes?

This occurs because a small bubble of air has entered the middle ear, up from the back of the nose. It passes through the Eustachian tube, a membrane-lined tube about the size of a pencil lead that connects the back of the nose with the middle ear. The air in the middle ear is constantly being absorbed by its membranous lining and re-supplied through the Eustachian tube. In this manner, air pressure on both sides of the eardrum stays about equal. If, and when, the air pressure is not equal the ear feels blocked

Which of these is a benefit of health care access that lowers the risk of chronic disease like skin cancer? a. higher incomeb. better doctorsc. early detectiond. safer environmentif this is your question it is c