A Natural, Meandering, River Channel Is Modified into a More

question 105

Multiple Choice

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)There was no change in gradient or friction.

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Definitions:

Parasympathetic

A division of the autonomic nervous system responsible for relaxation and conserving energy, often referred to as the "rest and digest" system.

Sympathetic

Relating to the sympathetic nervous system, part of the autonomic nervous system that orchestrates the body's rapid involuntary response to dangerous or stressful situations.

Sympathetic

Pertaining to the part of the autonomic nervous system that increases heart rate, constricts blood vessels, and raises blood pressure, typically in response to stress.

Parasympathetic

Part of the autonomic nervous system responsible for conserving energy and bringing the body to a state of rest by slowing the heart rate and increasing intestinal and gland activity.