The condition of equilibrium that results in the displacement of the mantle by the continental and oceanic crust is known as
a. erosion.
b. topography
c. isostasy.
d. root rebound.

The answer is C. Isostasy

This concept explain how diffrent topographic height can exist on the surface of the Earth.

Isotasy provides an important view of the processes that are happening in the areas that are experiencing vertical movement.

When a certain area of earth crust reach the sate of isotasy, its called isotatic equilibrium

Ithink it is space that makes up 70 percent

Answer( solar wind );