When plate tectonics cause cracks to form,
a. scientists expect entire continents to fall into the earth
b. volcanoes can occur
c. a large rift usually remains and is never filled in
d. most likely the country of mexico will separate from the continental united states

The correct answer is B. When plate tectonics cause cracks to form, volcanoes can occur.

Explanation:

A volcano is basically an opening or break in the surface of a planet or in the earth's crust, caused by the cracks made by the movements of plate tectonics; There are some geographical areas where volcanoes really dominate the landscape, rising several meters above the surface.

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