Cinder cones are formed when ____

a. ?seawater leaches into the magma plume of a stratovolcano
b. ?low-viscosity basalt encounters groundwater near the surface
c. ?a magma chamber collapses, building magma pressure
d. ?a volcanic eruption creates large amounts of ash
e. ?high-viscosity rhyolite interacts with surface soil


ANSWER: b

Environmental & Atmospheric Sciences

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