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Sedimentary sequences, which are bounded by unconformities, record global sea level rise and fall with variations in ________.

Where can icy bodies left over from the protoplanetary disk that formed our Solar System long after the Big Bang be found?

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.

The color of a mineral in powdered form is termed ________.

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?

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

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

A surface along which rock on opposed sides is offset by an earthquake-induced slip is called a ________.

At a subduction zone, the overriding plate ________.