Describe the favored locations for surface cyclones and anticyclones with respect to the upper-level ridges and troughs
Each of the statements refers to the approach or to the passage of a front.
If the statement refers to the approach of a typical cold front, use the letter A for your answer. If the statement refers to the approach or passage of a typical warm front, use the letter B. If the statement applies to both, answer with letter C.
Surface lows tend to develop on the downwind side of troughs and surface highs are favored on the downwind side of ridges.
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How is sound transmitted through a medium?
a. By rapid vibrations of molecules b. By rapid temperature changes in a medium c. By rapid pressure changes in a medium d. By rapid random movements
Salt crystal growth causes weathering because ____
a. chemical reactions with salt weaken some minerals b. organisms readily grow on salt crystals c. salt oxidizes readily d. salt expands when it freezes e. growing salt crystals can wedge apart cracks
How does Purchasing Power Parity (PPP) adjust Gross National Income per capita?
A) PPP takes into account the age and productivity of the local populations. B) PPP takes into account the rise and fall of the Dow Jones Industrial Average. C) PPP takes into account the 2008-2009 economic decline. D) PPP takes into account the strength or weakness of local currencies. E) It is a composite indicator that takes into account all of the above features.
Emission testing is required by federal law in areas that have had problems meeting health-based air quality standards. Such areas typically include industrialized urban areas and large cities. Supporters of this practice argue that all citizens benefit because vehicles with malfunctioning pollution control systems are identified. They also cite government data showing average failure rates of 10%. Critics of the testing argue that, of those vehicles that fail, 90% are vehicles 5 or more years old. A law has been placed on the ballot to save citizens money by no longer requiring vehicles less than 5 years old be tested unless they are obviously malfunctioning.Suppose the law passed. What is likely to happen to air quality in those areas where testing is required?
A. There should be little change to air quality. B. Air quality should improve a lot. C. Air quality should decline a lot.