The earth's earliest atmosphere was probably composed mainly of ________, which has/have since largely dissipated into space.
A. Oxygen
B. Water
C. Hydrogen and helium
D. Carbon dioxide and methane
E. Nitrogen and sulfur
Answer: C
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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
Tidal ranges are lowest where the sea bottom slope is ____________________ in slope and the inlet is
____________________ in width, and are highest where the slope is ____________________ in slope and the inlet is ____________________ in width. Fill in the blank(s) with the appropriate word(s).
Universalizing religions mostly have in common
A) origins with individual men or prophets. B) unknown or unclear origins. C) belief in multiple deities. D) holy sites in Jerusalem. E) roots in agricultural practices.
Of the following, ________ is not yet regulated by the EPA
A) lead B) ozone C) sulfur and nitrogen oxides D) carbon dioxide E) carbon monoxide