How is the crust and the inner core alike

They are both solids

Explanation:

I had to answer that question a long time ago hope this helps.

indicate valleys, hills, steepness and gentleness of slopes.

explanation:

contour lines on a map indicate elevation, or depth. numeric notations on contour lines refer to the level of elevation, or height about sea level.

i think it is true since you can test the answer and can use observations to complete it.