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← GeographyWhich consequence results when increased sediment load overwhelms channel capacity in a proglacial stream?
A)Increased abrasion on the channel bed
B)Braided stream formation and widening✓
C)Reduced sinuosity and channel straightening
D)Increased laminar flow in the channel
💡 Explanation
Braided streams form due to excessive sediment deposition; aggradation causes the flow to diverge around channel bars. Increased sediment beyond the stream's transport capacity promotes channel avulsion and widening rather than localized abrasion, because sediment deposition overwhelms flow streamlining.
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