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Which outcome occurs when shield volcano lava's viscosity increases?

A)Formation of steep stratovolcano cones
B)Gentle, broad lava flow plains
C)Increased effusive eruption frequency
D)Decreased gas content within lava

💡 Explanation

Steeper cones occur; **viscosity increases resistance to flow**, therefore lava piles up rather than spreading because frictional forces overcome gravitational forces, unlike low-viscosity lava which produces extensive lava plains.

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