Why are ocean basins at lower elevation than continents?

spudlykins

New member
a)basalt is denser than granite
b)the basins are depressed by the weight of the water
c)the ocean floor is thicker than the continental area

Yes, I'm stupid and you are doing my homework for me...I'll owe ya one :)
Well I have a better question instead of this one...
"Compared to the thickness and density of the continetal crust of North America, the oceanic crust of the Juan de Fuca seafloor is:
a)thinner and more dense
b)thicker and more dense"
 
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