Ossiculoplasty is the term to repair the outer ear.
It causes cultural change by bringing in diffrent cultures and traditions into a superior culture making it into a melting pot
I think tracheae which is B not sure tho
A. prevent cross-contamination.
Answer:
List three ways of reducing friction. 1.Polishing the rough surface. 2.Providing all bearings or wheels between the moving parts of a machine or vehicles reduce friction and 3.allow smooth movement as rolling friction is less than sliding friction.
