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15.Why do P waves bend when travelling? It is due to the
A. increased density of mantle rocks with depth
B. decreased density of mantle rocks with depth
C. change of direction as they pass through boundaries
D. rock oscillates perpendicular to the direction of wave propagation​

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DAVID122006GO

Answer:

A.

Explanation:

P-waves generally bend outward as they travel through the mantle due to the increased density of mantle rocks with depth.

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