Which statement is true?   Question 6 options:   a)  As the distance to the epicenter increases, the time interval between P and S waves also increases.   b)  As the distance to the epicenter increases, the time interval between P and S waves decreases.   c)  As the distance to the epicenter decreases, the time interval between P and S waves also increases.   7.  Mark all that are SURFACE WAVES.   Question 5 options:

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