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Question
Give reasons for the following:
Earth’s movements have modified the Earth’s surface.
Solution
The surface of the earth is undergoing constant change. Some of these changes take place all of a sudden as in the case of volcanic eruptions and earthquakes but most of them are gradual and slow. Due to these changes, the sediments which were originally deposited in horizontal layers are found tilted bent broken and twisted. In certain regions, the structures which were once at sea-level in the Baltic Sea are now well above the water. Recently it has been found that the larger part of the coast of Scandinavia is rising relative to sea-level but that of the Southern extremity is sinking. Along some coasts, submerged forests and various human structures show that the land has not only risen but at places, it has also submerged. All this has happened or is happening due to the Earth’s movements. Thus we find that the Earth’s movements have modified the Earth’s surface.
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