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science
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Term | Definition |
---|---|
Pangaea | a supercontinent that existed about 200 million years ago |
continental shelf | is an underwater part of a continent that extends under shallow water from the edge of the land down to a steeper slope |
theory of plate tectonics | in the late 1960 scientist expanded Alfred Wegener idea of drifting continents and proposed |
tectonics plates | the theory of plate tectonics states that earths crust and upper mantle are broken into enormous slabs. |
mantle | the layer of earth between the crust and the core. |