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1.what do you call to the trace of fault or fracture along which the crust has moved in the surface of the earth

a. epicenter
b. focus
c. fault plane
d. fault line

2.How do faults produce quakes

a. when too much bending of rocks occurs and the limit is reached
b. when the energy from inside the earth make the rocks move
c. when friction in the boundary or fault is overcome
d. all of the above​