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2015-06-10T18:40:06+08:00

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Certified answers contain reliable, trustworthy information vouched for by a hand-picked team of experts. Brainly has millions of high quality answers, all of them carefully moderated by our most trusted community members, but certified answers are the finest of the finest.
Earthquakes usually occur at plate boundaries, e.g. Pacific Ring of Fire, where the plate collide into each other and create shockwaves that rock Earth's surface. 
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2015-06-10T20:08:58+08:00

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Certified answers contain reliable, trustworthy information vouched for by a hand-picked team of experts. Brainly has millions of high quality answers, all of them carefully moderated by our most trusted community members, but certified answers are the finest of the finest.
Earthquakes are not distributed. Almost all of them are tend to be concentrated in narrow zones.

--Mizu
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