The answer in my opinion is d. how seismic waves travel; because for the other answer choices, they have nothing to do with earths interior.
Answer:
In general, erosional coasts are those with little or no sediment, whereas depositional coasts are characterized by abundant sediment accumulation over the long term. Both temporal and geographic variations may occur in each of these coastal types.
Answer:
yoo you get my e m a i l?
Explanation: