In Massachusetts and other states, closed landfills are for the first time being used for
A) producing electricity by incinerating solid wastes.
B) generating electricity from acres of photocells covering the landfill surface.
C) extraction of recyclable materials.
D) disposal of radioactive waste from nuclear power plants.
B
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A 10-Hz wave has a period of
A. 100 s. B. 10 s. C. 0.1 s. D. none of the above
One of the chief issues with climate change is that
A) climate can change on more than one scale. B) there is not enough data available to build a reliable climate. C) climate change is spatially consistent. D) data are too sparse to develop climatic trends.
Conchoidal fractures are indicative of the mineral ________
A) muscovite B) quartz C) fluorite D) pyroxene
Which of the following is generally true of most organic compounds?
A) their bonding is covalent in nature B) their aqueous solutions conduct electricity C) both a and b D) neither a nor b