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Biology, 02.12.2020 21:10 Aprilbtrippin2004

Dr. Chang is studying seismic waves. He notices that seismic waves (a type known as P-waves) travel faster through the mantle than through the outer core. What can he conclude from this observation?
OA. The mantle is wider than the inner core.
ОВ.
The inner core is wider than the mantle
OC. The outer core is not as dense as the mantle
OD. The mantle is not as dense as the outer core.

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