As entropy increases in a system, energy within the system
A. becomes less ordered.
B. reaches equilibrium.
C. becomes more ordered.
D. moves toward destruction.
Answer: A
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A) snowmelt B) explosions deposit loose ash and lapilli C) destruction of vegetation D) tectonic fault movement
Why did Congress require the Environmental Protection Agency to establish minimum drinking water standards?
A) Long-term exposure to small amounts of chemicals was proven to be hazardous. B) Levels of contaminants in municipal drinking water systems rose to toxic levels. C) The long-term effects of small amounts of chemical contamination were unknown. D) Laboratory detection limits of common contaminants became much more sensitive.
The isohypses portrayed here show
A. low pressure, northern hemisphere. B. high pressure, southern hemisphere. C. high pressure, northern hemisphere. D. low pressure, southern hemisphere.
The drop in the water table around a pumped well is the
A. porosity B. drawdown C. hydraulic head D. fluid potential