Invasion of the Soviet Union... seeing how the U.S.S.R. is gone, and has been for years...
Magnetic reversal is a<span> change in the Earth's </span>magnetic<span> field resulting in the </span>magnetic<span> north being aligned with the south, and vise versa. This also supports the sea floor spreading idea. </span>
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Regions in Europe:
Northern Europe,Central Europe, Western Europe, Eastern Europe, Southern Europe & Scandinavian Peninsula.
Major rivers: Danube,Volga,Loire,Rhine,Elbe,
Countries belong to Europe: Ireland, France,Italy, Germany,Greece
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The method that scientists use to discern this information is similar to medical CT scans that bounce X-rays through the human body to make three-dimensional pictures of internal tissue. In an analogous manner, a method called seismic tomography uses hundreds to thousands of earthquakes recorded by dozens of stations to measure the speed of seismic waves through the Earth--data that allow geophysicists to make three-dimensional pictures of structures beneath the surface. Scientists compare these seismic velocities and infer the composition by comparing them with average, thermally undisturbed values.
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