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← GeographyWhich outcome results when orographic lift interacts with stream confluences?
A)Increased specific humidity downstream
B)Localized extreme flow instabilities✓
C)Amplified seasonal temperature gradients
D)Reversal of flow sediment transport
💡 Explanation
Extreme orographic effects at confluences generate substantial uplift because the narrow topography accelerates airflow and causes intense precipitation, therefore sudden flow instabilities result, rather than gradual humidity changes from typical evaporation patterns.
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