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Question
A natural, meandering, river channel is modified into a more or less straight and smooth, canal-like channel. Which of the following statements is correct?A) The natural channel had a lower gradient and less friction than the modified channel.
B) The straight channel has a higher gradient and more friction than the natural channel.
C) The natural channel had a lower gradient and higher friction than the straight channel.
D) All of the above statements are true.
Answer
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