The speed of seismic waves varies as they
travel through Earth because
A. Temperature varies within the Earth
B. Density of rocks varies within the Earth
C. The composition of rocks varies within the Earth
D. All of the above
Help pleasee

Respuesta :

Answer:

I think its C but you can choose B&C

Explanation:

A (and D) is not the answer because natural disaster dosent matter with temperatures.

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