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← GeographyWhich effect increases when polar vortex cells weaken?
A)Increased mid-latitude cyclonic activity✓
B)Enhanced oceanic thermohaline circulation
C)Decreased tropical storm intensity
D)Reduced stratospheric ozone depletion
💡 Explanation
Weakening polar vortex cells reduces the temperature gradient, decreasing the strength of the jet stream; therefore, mid-latitude regions experience greater wave developments that lead to increased cyclonic activity, rather than altered ocean circulation.
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