Biofuels are ________

A) batteries that fuel automobiles and buses
B) batteries that derive energy from plant material
C) devices that directly convert fuel to electrical currents
D) fuels that use electrical currents to power automobiles
E) fuels that are derived from plant material


E

Environmental & Atmospheric Sciences

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Within the Ferrel cell, surface air flows ________.

A. toward the equator B. poleward C. parallel to the pressure gradient force D. to the west

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Raising the floor of a building above the 100-year flood level prevents most erosion that occurs

a. True b. False

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The mammal-like reptiles at the end of the Paleozoic were ____

a. thecodonts

b. therapsids c. protoavis d. hesperornis e. monotremes

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