This article is about the development of the continental drift hypothesis before 1958. For the contemporary theory, see plate tectonics. For the Russell Banks novel, see Continental Drift (novel). For the fourth film in the Ice Age franchise, see Ice Age: Continental Drift.

The continental drift of the last 150 million years

Antonio Snider-Pellegrini's Illustration of the closed and opened Atlantic Ocean (1858).[1]
Continental drift is the movement of the Earth's continents relative to each other, thus appearing to "drift" across the ocean bed.[2]The speculation that continents might have 'drifted' was first put forward by Abraham Ortelius in 1596. The concept was independently and more fully developed byAlfred Wegener in 1912, but his theory was rejected by some for lack of a mechanism (though this was supplied later by Arthur Holmes) and others because of prior theoretical commitments. The idea of continental drift has been subsumed by the theory of plate tectonics, which explains how the continents move.[3]
In 1858 Antonio Snider-Pellegrini created two maps demonstrating how the American and African continents might have once fit together.
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Demography-Study of human population
Population density- Number of people per square mile
Carrying capacity- Population an area can support
Census- Count of an areas population
Answer: mongolia and russia
Explanation: if im correct