Which of the following is the correct definition of stream gradient?
A) the distance traveled by water in a channel times a drop in elevation
B) the increase in discharge of a stream per unit drop in elevation
C) the drop in elevation of a stream divided by the distance the water travels
D) the water pressure at the bottom of the stream divided by the stream's width
C
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The electromagnetic spectrum of radiant energy travels in waves at the speed of light in all directions from the Sun
Indicate whether the statement is true or false
On the Spring and Fall Equinoxes, the noon sun will be at 90° (directly overhead) at the equator
a. True b. False Indicate whether the statement is true or false
When a 100-kg block is simultaneously pushed toward the east with 200 N and toward the west with 150 N, the combination of these forces on the block is
A. 350 N west. B. 50 N west. C. 350 N east D. 50 N east.
Which of the following would NOT be a limiting factor for a plant species?
A) Daily precipitation values B) Number of predators C) Days below freezing D) Soil phosphorus content