So by looking at the seismic waves from earthquakes the scientist learned about the crust and the mantle but they also learned about the outer and inner core. To do this you have to look at a different kind of waves, the S (secondary waves) waves that also get released by an earthquake.
Answer:
1. B
2. B
3. A
Sorry if any of these are wrong
The answer is true. You’re welcome
Malleable because the rest are chemical