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What causes the up-and-down squiggles on the seismogram show below?

a) variations in air pressure
b) ground vibrations
c) tsunami waves
d) electromagnetic pulses

What causes the up-and-down squiggles on the seismogram show below? a) variations-example-1
User TermiT
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1 Answer

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B) ground vibrations
User Prattski
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