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Distinctive rock sequences on South America terminate at the Atlantic Ocean but reappear on the continent of ________.

The San Andreas Fault zone in California is an example of a ________ plate boundary.

An aquifer can have ________ porosity and ________ permeability but not ________ porosity and ________ permeability.

The base level of a tributary would become ________ if a dam and a reservoir were constructed where it flowed into a trunk stream.

Volcanoes that have submerged beneath the surface of the sea are termed ________.

The flat-lying area surrounding a river channel is termed the ________.

Mid-ocean ridges (MORs), which are the sites of new oceanic crust formation, are linear mountain chains that run along divergent plate boundaries. Why does an MOR sit up higher than the surrounding oceanic crust?

Chemical and biochemical rocks are classified primarily on the basis of ________.

In uniform sediments with a relatively constant and gentle slope at the surface, a ________ drainage network is expected.

The densest layer of Earth is the ________.