Winds generally move across the United States from ____
A) north to south
B) east to west
C) south to north
D) west to east
D
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A ____________________ rock forms when a pre-existing rock is subjected to high temperatures, high pressures, chemically active fluids, or a combination of these agents.
Fill in the blank(s) with the appropriate word(s).
Which of the following is mainly responsible for red sunsets, blue moons, and milky white skies?
A. reflection of light B. dispersion of light C. refraction of light D. scattering of light
The seafloor spreading hypothesis predicts that the mid-ocean ridges should be locations of rising asthenosphere. This prediction is supported by seismic data that indicates
A) faster seismic wave velocities at the trenches. B) slower seismic wave velocities at the trenches. C) faster seismic wave velocities at the ridges. D) slower seismic wave velocities at the ridges.
Chymotrypsin has 251 stereocenters. What is the maximum number of stereoisomers possible for a molecule with this number of stereocenters?
A) 251 B) 2 x 251 C) 2251 D) 10251