Motion Sickness (Travel Sickness): Causes, Symptoms and Treatments. Written by Sy Kraft B.A. Motion sickness is a very common disturbance of the inner ear that is caused by repeated motion such as from the swell of the sea, the movement of a car, the motion of a plane in turbulent air, etc.
In a federal system of government, or a republic government, states function independently of one another. Although there is almost always a central power. Comments
Answered by The WikiAnswersÂ® Community. Answers.comÂ® is making the world better one answer at a time. Concurrent powers are shared between the national and state government. The two are on different levels, so they command the same powers, with the Federal level's powers superceding those of the State.