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A sand ridge connecting an island to the mainland or to another island is a ________.

In 1883, ________ erupted and emitted great quantities of sulfur dioxide gas that cooled the global mean temperature.

Which of the following refers to the investigative process by which geologists identify and match sedimentary strata and other rocks of the same ages in different areas?

The elastic rebound theory for the origin of earthquakes was first proposed by ________ following the ________ earthquake.

Which best explains the demise of the Farallon Plate?

________ is the maximum possible damage designation on the Mercalli scale.

A ________ is a semiarid, transitional region.

Which one of the following shows the correct order (left to right) of decreasing magma viscosity?

The majority of Atlantic hurricanes occur ________.

Match the description with the appropriate volcanic structures.