The most abundant greenhouse gas in the Earth's atmosphere is
A) carbon dioxide (CO2 ).
B) methane (CH4 ).
C) water vapor (H2O).
D) nitrous oxide (N2O).
C
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In the U.S. Census, whites are more likely to be overcounted than blacks
Indicate whether this statement is true or false.
Two competing theories have been advanced to explain the origin and diffusion of languages. These are
A) The Babylonian Thesis and the Russian Thesis B) The War Thesis and the Peace Thesis C) Mayan Thesis and Inca Thesis D) The London Thesis and the Washington Thesis E) The Eastern Thesis and the Western Thesis
The four scales of atmospheric motion from largest to smallest are:
A) planetary, synoptic, meso, and micro. B) planetary, soprano, micro, and meso. C) meso, planetary, micro, bass. D) micro, meso, synoptic, planetary.
The term "second genetic code" refers to which of the following?
A) The ability of the codon and anticodon to recognize each other. B) The ability of aminoacyl-tRNA synthetases to correctly pair an amino acid with its correct tRNA. C) The ability of DNA to transfer genetic information to RNA. D) None of these is correct.