There is an urgent need to improve the recycling strategy for e-wastes because
A) there is no profit to be made from the materials.
B) they contain toxic but valuable materials, and U.S. recyclers tend to outsource to China.
C) it has been easier and safer to dispose of e-wastes in landfills.
D) e-wastes contain large amounts of radioactive materials.
B
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We cannot exert a force on a wall
A. unless the wall simultaneously exerts the same amount of force on us. B. if the wall resists our push. C. unless we put our mind to it. D. all of the above
If a geologist refers to an igneous rock as plutonic, she means that ________.
A. it is dark-colored B. it formed in the Precambrian C. its composition is high in silicate minerals D. it formed intrusively E. she is not sure what type of rock it is
List the eight essential changes in the way people perceive and use their environments necessary to meet sustainable development
Europe is a northern continent. All the British Isles, for example, fall above the __________ parallel.
-sixtieth -fifty-fifth -forty-fifth -fortieth -fiftieth