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← GeographyWhich eruption risk increases as rhyolitic lava cools rapidly forming a dome?
A)Increased risk of violent explosions✓
B)More effusive lava flows form
C)Decreased thermal convection currents arise
D)Formation shield volcanoes over time
💡 Explanation
Rapidly cooled rhyolitic lava in domes leads to increased pressure; degassing is impeded. Therefore, the risk of violent explosions increase because volatile gases are trapped during solidification, leading to over-pressurization rather than stable flow.
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