Multiple Choice
How is an alluvial fan formed?
A) A stream erodes down through older terraces and entrenched meanders.
B) Sediment is deposited by debris flows and streams that decrease in velocity along the mountain front.
C) A landslide blocks the stream,causing sediment to accumulate upstream.
D) A dam increases the speed of currents below the dam.
Correct Answer:
Verified
Correct Answer:
Verified
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