The EPA's cost/benefit analysis of air pollution regulation in the United States indicates that ________
A) the benefits and costs of the regulations are about equal, so the standards are at the economic break-even point
B) air pollution standards may be too strict, since the costs of compliance slightly outweigh the benefits
C) the costs of being in compliance with the regulations are negligible
D) although costly, the costs are far outweighed by benefits in illness and mortality prevention
D
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The bending of light that occurs when it enters a substance of different density at an angle is called ____
A) diffraction B) reflection C) refraction D) scattering
The desert vision of palm trees reflected in water is usually not reality but an example of:
A) a lunar glory. B) an inferior mirage. C) looming. D) a superior mirage.
A plant that is unable to extract needed water from soil has reached its
A) field capacity. B) permeability. C) wilting point. D) porosity.
Normal kidney function involves which of the following?
A) filtration in which small molecules are lost but large molecules are retained B) reabsorption of some small molecules from the urine C) both a and b D) neither a nor b