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← GeographyWhich climate outcome results when Walker circulation decelerates?
A)Eastern Pacific upwelling weakens✓
B)Increased strength of trade winds
C)La Niña ocean temperatures intensify
D)Antarctic ice sheet expansion accelerates
💡 Explanation
El Niño events occur because weakening Walker circulation reduces trade winds, thereby suppressing upwelling in the eastern Pacific. This results in warmer surface temperatures rather than increased trade winds or La Niña conditions, therefore, less upwelling.
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