Which type of mammal lays eggs?
A) marsupial
B) monotremes
C) eucalyptus
D) placental
E) none of the above
Answer: B
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Biofuels are ________
A) fuels that use electrical currents to power automobiles B) batteries that fuel automobiles and buses C) fuels that are derived from plant material D) batteries that derive energy from plant material E) devices that directly convert fuel to electrical currents
Which of the following is an example of kinetic energy?
A) a rock at the top of a cliff B) the energy held in bonds between atoms C) the energy held in food D) a rock falling from a cliff
Judge the following sentence according to the criteria given below: Internal waves are associated with pycnoclines BECAUSE these waves travel along the boundary between waters of different density
A) The assertion and the reason are both correct, and the reason is valid. B) The assertion and the reason are both correct, but the reason is invalid. C) The assertion is correct, but the reason is incorrect. D) The assertion is incorrect, but the reason is correct. E) Both the assertion and the reason are incorrect.
The largest known galaxies are ________
A) irregular B) round C) elliptical D) spiral E) barred spiral