Answer:
A. The astenosphere is denser than the lithosphere
Explanation:
The theory of isostasy is a theory that suggest that the layers of Earth are arranged in accordance to their density. It is a theory that usually refers to the mantle and crust. The mantle (astenosphere) is denser than the crust (lithosphere), so the crust floats on top of it, depending on its density, with he continental crust being higher, while the oceanic crust being lower. The two forces that are responsible for this are the gravity and buoyancy.
It doesn't sound important
Answer:
Breakwater
Explanation:
An artificial structure built parallel to the shoreline to stabilize the shore is called a BREAKWATER.
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I think The upper midwest is the best choice.
Im prerty sure it has something to do with the enconomy in the Usa