Land surfaces change, erosion happens, the ground collapses, etc.
The appropriate answer is 4. The formation of Mid-Ocean ridges. There are two types of divergent margins: continental separation and oceanic floor spreading. Where the sea floor separates magma upwells and new oceanic crust is formed. Mid ocean ridges are home to hydrothermal vents. These support a unique ecosystem of marine organisms. The Mid- Atlantic Ridge where the African and Eurasian plates separate from the North and South American plates.
Friction occurs when the surfaces and heat of two surfaces grind against each other.
I think these are the answers
The type of rocks are magma and the igneous rocks.