Why are divergengent bounderies considered constructive while divergent bounderie is considered?

Answer 1

Divergent boundaries are considered constructive because they occur where tectonic plates move apart, allowing magma from the mantle to rise and solidify, creating new crust. This process forms features such as mid-ocean ridges and rift valleys. In contrast, convergent boundaries, where plates collide, are viewed as destructive because they can lead to the subduction of one plate beneath another, resulting in the destruction of crust and geological features like deep ocean trenches and volcanic arcs.