What part of the ear allows air to enter to equalize pressure on both sides of the tympanic membrane?

Eustachian tube

Explanation:

Eustachian tube is the auditory tube, that connects middle ear with nasopharynx. The main role of the Eustachian tube is to regulate and maintain the pressure in the ear (it equalizes the pressure between the middle ear and the atmosphere). The tube is usually closed, but it opens when we swallow and chew. It also opens with positive pressure.

Blockage of the Eustachian tube can lead to discomfort or even hearing problems.

for 8 am not sure maybe yes?

for 9 if it is asking if the male is more or less it would be less

hope i even just a little : )

i got you i did it ya know what it is just needing to fill this in for a quick task!