Question

Which have scientists learned from studying seismic waves that travel through earth's interior?

A.
The layers of the earth increase in density as one moves toward the earth's center.

B.
There are no finite boundaries between the layers. They mesh into one another.

C.
The inner core of earth is liquid.

D.
The crust of earth is liquid.

Answer 1

Cant be D or else we would be dead.

It's C because those waves cause rumbles which cause the magma in the earth to rumble which leads to volcanic eruption.

Answer 2

Lol thanks :)