Wednesday, January 22, 2014

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In 1910, a german scientist named Alfred Wegener hypothesized that Earths continents had locomote. His hypothesis was that any the continents were at once joined together in a unity land mass and later bodgeed apart. The idea that continents moved behind across Earths outdoors became known as Continental drift. correspond to Alfred Wegener, the continents drifted together to category the supercontinent, or single landmass, Pangaea. Pangaea existed about ccc million old age ago. Over tens of millions of years, Pangaea began breaking apart. From variant scientific fields, Alfred Wegener ga thered show up to support his hypothesis. He similarly studied fossils, land features, and ancient climatical zones. His purloin from land features was that on some continents, chew ranges and coal beds occupation up. For example, mountain ranges on the east facial expression of mho America and west side of Africa line up. Wegeners show from fossils is that fossils of organisms that couldnt submerge bemuse been found in places now detached by the ocean. For example, lystrosaurus used to live in only in Africa and India. However, correctly now, lystrosaurus fossils have been found in Antarctica. A lystrosaurus couldnt have swam all the way from Africa or India to Antarctica. Alfred Wegeners evidence from ancient climatic zones is that evidence from rocks shows that randomness Africa was once very cold. Geologists found scratches in rocks and trough left behind glaciers. This shows that continental glaciers once cover South Africa. Wegener then came up with the idea that continental drift moved South Africa away from the South Pole. Today with technology, which Wegener didnt have, we contumacious that there is no such thing as continental drift. A widely held theory that explains the movement of continents is plate tectonics. Subduction and sea-floor facing pages also cause continents to move. Other causes for continents to move are mid-ocean ridges, deep-ocean tr! enches, and convection currents in the...If you unavoidableness to get a full essay, order it on our website: BestEssayCheap.com

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