Deforestation, that would be clearing the land leading to desertification
Volcanoes can form underwater thats how Hawaii was made
There are <span>Divergent boundaries which are areas where plates move away from each other, forming either mid-oceanic ridges or rift valleys.
There are Convergent boundaries which are areas where plates move toward each other and collide.
And there are Subduction zones which occur where an oceanic plate meets a continental plate and is pushed underneath it. Subduction zones are marked by oceanic trenches
</span>
I hope this helps. I know it was pretty late, sorry about that.
