Pls do it
brainstorm what the long-term effects of seafloor spreading might be

New crust was, and is now, being continually created along the oceanic ridges.

Explanation:

I think that is it, but I don't know for sure lol

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.

periodic trends is an atom that gets larger as the number of electronic shells increase, the radius of atoms increases as you go down a certain group in the periodic table of elements. in general, the size of an atom will decrease as you move from left to right of a certain period.