Arthritis Arthritis is inflammation of the joints. Causes include injury, abnormal metabolism (such as gout), inheritance (such as in osteoarthritis), infections (such as...learn more >>. Dehydration in Adults Dehydration occurs when the loss of body fluids (mostly water), exceeds the amount that is taken in.
As noted earlier, viewed from above, geostrophic flow in a subtropical gyre is clockwise in the Northern Hemisphere and counterclockwise in the Southern Hemisphere. Adapted from DataStreme Ocean and used with permission of the American Meteorological Society.
Most of the northern hemisphere was covered by great ice sheets during the Pleistocene epoch. Mile-thick rivers of ice flowed down from the north to grind, tear, and pile the earth, creeping across parts of Iowa at least four different times between one million years ago and 11,000 years ago.