More in Patient Rights. Drugs work in your body in a variety of ways. They can interfere with microorganisms (germs) that invade your body, destroy abnormal cells that cause cancer, replace deficient substances (such as hormones or vitamins), or change the way that cells work in your body.
Pangaea begins to break up. Pangaea (sometimes spelled Pangea), the most recent of a series of supercontinents on Earth, formed about 270 million years ago and broke apart about 200 million years ago. At this time most of the dry land on Earth was joined into one huge landmass that covered nearly a third of the planet's surface.
One simplified version holds that that Pangaea formed as a result of the collision of Gondwana and Laurasia (a supercontinent that also existed before and after Pangaea), while Laurasia was formed by the collision during the Carboniferous of the Siberia continent and the