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← GeographyWhich outcome occurs when effusive lava flows spread?
A)Shield volcano construction predominantly happens✓
B)Stratovolcano formation inevitably originates
C)Caldera collapse quickly becomes possible
D)Pyroclastic surge becomes exceedingly prevalent
💡 Explanation
Effusive lava flows result in shield volcano construction because lava's low viscosity promotes widespread dispersal under gravity. Therefore, the broad, gently sloping structure is built rather than a steep stratovolcano, as a different process would involve explosive eruptions and pyroclastic flows.
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