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For numbers 27-28, refer on the selsmic wave's behavior below.
A. Circular motions like an ocean wave.
B. Snake-like motions parallel to the earth' surface.
C. Contractions and expansions that are in the direction of wave propagation.
D. Shearing motions that are at right angles to the direction of wave propagation.
27. Which of the following is produced by S-waves?
28. Which of the following is produced by P-waves?
29. Which of the following is the correct order of seismic waves according to their time arrival​