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Rocks changing shape due - PowerPoint PPT Presentation

How often do earthquakes occur?

How often do earthquakes occur?. Once a year Once a month Once a week Once a day http://www.seed.slb.com/flash/science/features/earth/livingplanet/quake_map/en/index.htm?width=600&height=500&popup=true&terms=epicenters http://earthquake.usgs.gov/. Earthquakes. Seismology ? Seismologist ?

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Rocks changing shape due - PowerPoint PPT Presentation

How often do earthquakes occur?