Earthquake Information: Seismograph: The seismic strength is described or determined by the Richter scale or the Richter scale. Where did the strongest earthquake in the world happen and when? The Chile earthquake is the most powerful earthquake ever to hit the world, with a magnitude of 9.5 on the Richter scale, and occurred in Valdivia, in southern Chile, on May 22, 1960.
more ..The "biological clock" is an innate, self-driving internal clock that controls sleep and waking cycles, as well as its major role in everything that pertains to man,
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