The average miles per gallon rating of U.S. vehicles has ________
A) doubled since the 2008 election
B) now matched the 45 mpg rating mandated by the European union
C) doubled in the past two decades
D) made no improvement the past two decades
E) been raised to 40 mpg because of the 2010 energy bill passed by Congress
D
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Heating ores to release the metals they contain is called ____________________
Fill in the blanks with correct word
How many stereoisomers are possible for 1,4-heptadiene?
A) 2 B) 4 C) 7 D) 8
It is possible for coastal waters to become polluted
a. True b. False Indicate whether the statement is true or false
Of the biogeochemical cycles, which have been interfered with by the actions of humans, which is thought to be likely to have the most far-reaching effects on the biosphere?
A) Oxygen B) Nitrogen C) Carbon D) Water E) Copper