A Stream Begins at an Elevation of 200 Meters and Flows

question 45

Multiple Choice

A stream begins at an elevation of 200 meters and flows a distance of 400 kilometers to the ocean. What is the average gradient?

• A) 2 km/m
• B) 0.5 m/km
• C) 2 m/km
• D) 0.5 km/in

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Definitions:

Growth Hormone

A peptide hormone that stimulates growth, cell reproduction, and cell regeneration in humans and other animals.

Brain Activity

The functioning of the brain involving complex processes signaled by electrical impulses and chemical neurotransmitters.

REM Sleep

A phase of sleep characterized by Rapid Eye Movement, during which dreaming often occurs and brain activity increases.

Dreaming

A series of thoughts, images, or emotions occurring during sleep, especially during REM sleep phases.