The theory of continental drift is credited to

A. H. H. Hess.
B. W. Loma Prieta.
C. J. Tuzo Wilson.
D. Alfred Wegener.


Answer: D

Environmental & Atmospheric Sciences

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During the most intense phases of global cooling in the fourteenth century, average temperatures fell by as much as

a. two or three degrees.

b. one or two degrees.

c. three or four degrees.

d. four of five degrees.

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Where is the difference between frontal boundaries so slight that the uplift necessary to create thunderstorms is lacking?

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