Moderate

Alluvial Fans means:

Correct answer: D. All of the above

  • A. Where a stream flow into a larger main valley
  • B. Suddenly free to spread out
  • C. The stream slow down, loses energy
  • D. All of the above

Explanation

An alluvial fan forms where a stream leaves a confined channel, spreads suddenly, slows down and loses carrying energy, depositing sediment in a fan-shaped spread. Thus, all the described conditions point to an alluvial fan.

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