Bc of all the different people that moved their have their own cultures and bc everyone is happy with their cultures they would like to share part of that happiness. That is why you see so many cultures.
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Earthquakes are measured using instruments called seismometers, that detect the vibrations caused by seismic waves as they travel through the crust. Seismic waves can be both natural (from earthquakes) or caused by human activity (explosions).Yes, some people say they can predict earthquakes, but here are the reason.
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