Non-conventional oil sources include all of the following except
A. tar sands.
B. biofuels.
C. coal.
D. liquified natural gas.
Answer: D
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Prior to making landfall, Hurricane Sandy characteristics changed and it was classified as a
A) midlatitude anticyclone. B) typhoon. C) tropical depression. D) post-tropical cyclone.
Which of the following is formed by the reaction of formic anhydride with methylamine?
A) formamide B) N-methylformamide C) N,N-dimethylformamide D) a mixture of two or more of these compounds
Secondary messengers perform which of the following functions?
A) transmission of a message from one cell to another B) transmission of a message from the cell surface to its interior C) both a and b D) neither a nor b
When referring to hose, what does the "L" stand for "LDH"?
a. light b. low c. large d. limited