Heaving is commonly accomplished by:
a. oxidation.
b. carbonation.
c. alternating freezing and thawing.
d. rockfall.
e. talus.
C
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A. United States B. Japan C. Switzerland D. Great Britain E. Denmark
Instructions: Choose one answer from each pair of selections. Land and sea breezes are SYNOPTIC SCALE | MESOSCALE air circulations
Which is NOT TRUE regarding railroads?
A) Chicago grew as a rail hub. B) The United States federal government aided railroad expansion. C) The railroad was invented in the United States. D) In the 1800s, different railroads had different gauges (width between rails). E) By the latter 1800s, goods could be shipped from East Coast to West Coast by rail.
The earth formed approximately ________ years ago.
a. 13,700,000,000 b. 4,600,000,000 c. 5,000 d. 4,600,000