Milk is best classified as
A. a suspension
B. a heterogeneous mixture
C. a solution
D. an element
E. a compound
Answer: A
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The lack of oil on the market and the very low prices for crude petroleum and fuels in 2014-2015 may
A) hasten the transition to and investment in renewable fuels. B) bring even greater pressure to convert agricultural corn crops to ethanol. C) remove the necessity to improve energy efficiency of technology. D) threaten the economic viability of renewable energies.
Which of the following sites is most likely to be flooded if all other factors are held constant?
A) a site that is higher but closer to the river than a site that is lower but farther from the river B) a site next to the river where the main channel is wider and deeper than other segments of the river C) a site on the floodplain instead of a site on an older terrace D) All of these are correct.
Converting plant sugars into simple sugars creates which biofuel?
A. ethanol B. methane C. propane D. ethane E. butane
____________________ is the greatest cause of extinction because of habitat loss.
Fill in the blank(s) with the appropriate word(s).