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← GeographyWhich outcome occurs when viscous magma continually erupts, forming an unstable lava dome?
A)Pyroclastic flow generation✓
B)Formation of a maar crater
C)Creation of a shield volcano
D)Development of a caldera lake
💡 Explanation
Pyroclastic flows are generated because pressure builds within the unstable lava dome, leading to its collapse via gravitational instability; ejecting hot gas and ash rather than forming a crater or volcano, which involve different eruption mechanisms.
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