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Earthquakes
Volcanoes
Floods
Tropical Storms and Tornadoes
Snow and Avalanches


The Earth

About the Unstable Earth

biosphere picture

The earth's surface is slowly but continually being rearranged. Some changes such as erosion and deposition are extremely slow but they upset the balance which causes other more abrupt changes often originating deep within the earth's interior. The constant movements vary in insentity, often with stresses building up to a climax such as a particularly violent volcanic eruption or earthquake.


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