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Geography

Which outcome occurs when tectonic plate subduction ceases?

A)Isostatic rebound uplifts the continental crust
B)Increased mantle upwelling near the trenches
C)Magnetic field reversal events increase rapidly
D)El Niño frequencies and intensities increase

💡 Explanation

Isostatic rebound occurs because the removal of the subducting plate's weight allows the continental crust to浮上, according to Archimedes' principle. The continental crust slowly returns to equilibrium; therefore rebound, rather than changes in mantle plumes, magnetic fields or El Niño dynamics are observed.

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