Vertigo is a specific type of dizziness experienced as an illusion of movement of ones self or the environment. Some experience dizziness in the form of motion sickness, a nauseating feeling brought on by the motion of riding in an airplane, a roller coaster, or a boat. Dizziness, vertigo, and motion sickness all relate to the sense of balance and equilibrium. The inner ear (also called the labyrinth), which monitors the directions of motion, such as turning, rolling, forward-backward, side-to-side, and up-and-down motions.
NORTHERN HEMISPHERE Nigeria is in the Northern Hemisphere on the continent of Africa. NORTHERN HEMISPHERE Nigeria is in the Northern Hemisphere on the continent of Africa.
Nigeria is bordered to the north by Niger, to the east by Chad and Cameroon, to the south by the Gulf of Guinea of the Atlantic Ocean, and to the west by Benin. Nigeria is not only large in areaâlarger than the U.S. state of Texasâbut also Africaâs most populous country.