Red sunsets, blue moons, and milky-white skies are mainly the result of ____
a. refraction
b. dispersion
c. reflection
d. scattering
e. diffraction
ANSWER: d
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Creep occurs only on weathered or soil-covered surfaces of moderate slope. Indicate whether the statement is true or false
The second letter of Koeppen climate subtype presents information about ________
Fill in the blank(s) with the appropriate word(s).
Examine the sketch of a bend in a river. The arrows show the water flow direction. In which of the four lettered locations will the water be moving at the highest velocity?
A) A B) B C) C D) D
A population pyramid like Japan's predicted 2050 pyramid represents
A) the results of medical technology transfer seen in developing nations. B) a government policy to attract elderly immigrants. C) an aging population and contraction in the work force. D) a younger population decimated by the pandemic AIDS. E) recovery after the 2011 earthquake.