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In North America, the ___ separates streams that flow into the Pacific Ocean from those that flow into the Atlantic Ocean and Gulf of Mexico.
Q3: Non-silicate minerals include the halides like _.<br>A)
Q5: The relative-dating principle of _ states that
Q13: Mafic igneous rocks are silica-poor.
Q15: Rivers may develop pronounced sinuous (wiggly) curves
Q20: Detailed images provided by _ suggest that
Q34: The _ is based upon the observation
Q35: Without chemical weathering, the elevated levels of
Q55: Generally, seismic wave velocity decreases with depth.
Q58: Hawaii and _ eruptions are related to
Q59: Uranium-238 ultimately decays to _ -206.<br>A) lead<br>B)