The origin of the holes on this rock surface from Hawaii is: 
A) rainfall impact during solidification.
B) microbiological action,that is,microbes decompose organic material which is incorporated into solids.
C) gas that escaped during lava solidification.
D) all of these.
E) unknown,the rock could come from another planet.
Correct Answer:
Verified
Q17: Hawaiian volcanoes capable of eruption include _.
A)
Q18: Which of the following statements about shield
Q18: The three Vs of volcanology are _.
A)viscosity,volatiles,velocity
B)viscosity,volatiles,volume
C)viscosity,velocity,volume
D)volatiles,volume,variability
E)volatiles,velocity,variability
Q19: The typical trend in a rising plume
Q20: Scoria cones are built mainly from _
Q22: _ eruptions are common first phases in
Q25: _ eruptions are the most violent types
Q31: Oxygen and silicon are so abundant in
Q42: If the magma reaches the surface,it forms
Q45: If the magma cools and solidifies below
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