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Physics, 16.12.2021 21:10 TVASALLO31

I NEED HELP PLS Which is one step that geologists use to find the epicenter of an earthquake?

They look at data from at least one seismograph.
They measure the difference between arrival of P waves and S waves.
They draw circles around the epicenter from three locations.
They obtain information about the intensity of earthquakes from seismographs.

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I NEED HELP PLS Which is one step that geologists use to find the epicenter of an earthquake?
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