Some conditions can cause the absence of OAE's. These include: cysts, external otitis (swimmer's ear for example), stenosis, or abnormal middle ear pressure, a perforated ear drum, otosclerosis, cholesteatoma.
The Gulf of Mexico (Spanish: Golfo de MÃ©xico) is an ocean basin largely surrounded by the North American continent. It is bounded on the northeast, north and northwest by the Gulf Coast of the United States, on the southwest and south by Mexico, and on the southeast by Cuba.
The Gulf of Mexico is a huge body of water off the southeastern coast of North America. It is almost surrounded by the United States and Mexico. Cuba is to the east. Waterways called straits connect the gulf to the Atlantic Ocean and the Caribbean Sea. The Mississippi and Rio Grande rivers flow into the gulf.