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← GeographyWhich outcome occurs when subduction ceases at a trench?
A)Isostatic uplift of existing volcanoes✓
B)Increased frequency of explosive eruptions
C)Formation of deeper, steeper canyons
D)Slowing of tectonic plate movement
💡 Explanation
Isostatic uplift occurs because the removal of the downgoing plate reduces the downward force; therefore, the crust rises to regain equilibrium, rather than increasing eruptions because no further magma is generated.
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