Ala ọma jijiji
Ala ọmajiji bụ ịma jijiji nke elu ụwa nke sitere na ntọhapụ ike na mberede na lithosphere nke ụwa nke na-emepụta ebili mmiri seismic.
Aha
Ọ bụ ala ọmajiji kacha ukwuu e dekọrọ na US.
Earthquake
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