Which of the following is not an example of a disturbance in an ecosystem?
A. Shade
B. Flash flood
C. Fire
D. Drought
Answer: A
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Refraction causes a fish in water to appear
A. nearer the surface. B. deeper. C. neither deeper nor closer. D. none of the above
In a wave of oscillation, an individual water molecule near the surface will move
A) counterclockwise in the Northern Hemisphere, clockwise in the Southern Hemisphere. B) in a smaller vertical circle than a water molecule submerged deeper in the wave. C) in a larger vertical circle than a water molecule submerged deeper in the wave. D) clockwise in the Northern Hemisphere, counterclockwise in the Southern Hemisphere.
During the past half century, global food production has ________ world population growth
A) surpassed by several orders of magnitude B) fallen to critical levels compared to C) fallen behind D) grown at a faster rate than E) stayed about even with
What is NOT true about the extraction of groundwater?
A. Mining groundwater outpaces accumulation. B. It is considered a finite resource. C. Mining groundwater often leads to subsidence. D. It is called fossil water. E. Mining groundwater will always be a resource.