________ is to a point source of water pollution as ________ is to a nonpoint source of water pollution.
A. Golf course runoff; power plant effluent
B. Power plant effluent; an underground coal mine drain
C. Power plant effluent; golf course runoff
D. Golf course runoff; atmospheric deposition
E. Atmospheric deposition; golf course runoff
Answer: C
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Which of the following is a correct example of global warming creating a positive feedback?
A) Warming air melts permafrost releasing methane, a natural absorber of potent greenhouse gases. B) Less water evaporating will create more high level clouds causing the surface to warm. C) Warming oceans release more water vapor, a potent greenhouse gas that absorbs longwave radiation, further increasing temperature. D) Warming oceans release less water vapor, a potent greenhouse gas that absorbs longwave radiation, further increasing temperature.
Rock Cycle refers to:
a. The physical iteration process due to metamorphism b. The cycle of sedimentary rocks from mountain to the sea floor c. The transformation of Earth materials from one rock type to another, and the iteration d. The circulation of igneous rocks from magma to lava
The stepped-leader
A) moves downward in one continuous movement. B) occurs after the formation of the return stroke. C) creates the pathway for the flow of electrons. D) has no similarities to a dart leader.
The Enhanced Fujita scale is based on:
A) the measured wind speeds inside a tornado. B) the pressure gradient across the diameter of a tornado. C) the level of damage caused by a tornado. D) the frequency of lightning strikes concurrent with the tornado.