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← Earth & Natural SystemsWhat happens to the eruption style when magma density decreases significantly during a volcanic event?
A)Effusive lava flow increases sharply
B)Viscosity of the magma increases
C)Magma fragmentation becomes less efficient
D)Explosive potential of eruption increases✓
💡 Explanation
A decrease in magma density, particularly due to increased volatile content, enhances the magma's ability to fragment and expand rapidly. This promotes explosive eruptions because the pressure builds faster within the less dense magma, therefore increasing the potential for a more violent eruption rather than a more effusive one.
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