Answer: C. Region B
Explanation:
Region B is the North American continent which includes the United States. Land here is quite fertile and resources are plentiful as the continent boasts of vast farmlands, timber and an abundance of coal.
The people of this continent therefore need not import a lot of things. They do however have to import oil. Even though there are rich oil deposits present, these are sometimes quite expensive to extract which is why the region needs to import some of the oil that its people need.
The reasoning why the US place a blockade on Canada was because , At the time of the American civil war , Canada did not yet exist as a .. because of Canada's location ...
Oceanic crust is dominated by mafic and ultramafic intrusive igneous rocks whereas continental rocks are dominated by granitic (felsic) intrusive igneous rocks.
The difference in density has an impact on isostacy of crust floating on the semi-fluid upper mantle (asthenosphere), with continental crust (about 2.7g/cm3) rising or floating above oceanic crust (about 3.5 g/cm3).
The continental crust is by far the older of the two types of crust.
The mantle, oceanic crust, and continental crust all have different compositions due to a process called partial melting.
Because continental crust is less dense than oceanic crust it floats higher on the mantle, just like a piece of Styrofoam floats higher on water than a piece of wood does.
Answer:
Explanation:
