If the average temperature of the sun increased, the wavelength of peak solar emission would:a
shift to a shorter wavelength.
b. shift to a longer wavelength.
c. remain the same.
d. impossible to tell from given information
a
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Radiocarbon is ____________
a) carbon-12 b) carbon-13 c) carbon-14 d) both carbon-13 and carbon-14 e) none of these
The Earth's magnetic field is due to ____.
a. the presence of magnetic iron and nickel in the core b. gravity c. the occurrence of magnetite in all rocks d. convection in the liquid outer core e. none of these
Many ecologists think of ecosystems and even the Earth as a superorganism because its systems appear to be:
A. Self-regulating and self-stabilizing B. Unregulated C. Unchangeable D. Hierarchical E. Completely unpredictable
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