The typical trend in a rising plume of subduction-zone magma is to increase the ________.
A. viscosity
B. explosive potential of the magma by holding in the gases more tightly
C. percentage of SiO2
D. All of these choices are correct.
Answer: D
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Fill in the blank(s) with the appropriate word(s).
Creep is most effective and significant in a(n) ____________________ climate. Fill in the blank(s) with the appropriate word(s)
Leadership is ________
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