About when did glaciers on the highest mountains and in Greenland begin melting more rapidly?
a. ?1700
b. ?1900
c. ?1930
d. ?1960
e. ?1980
ANSWER: c
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The Wild and Scenic Rivers Act of 1968 ________
A) is an agreement between the United States and Canada to protect rivers that cross the boundary between the two countries B) no longer protects waterways because the act has been repealed to build more hydroelectric dams C) limits dams to no less than 5 miles apart D) permits dams of no more than 10 feet in height to be built along a designated waterway E) completely prevents a designated waterway from being dammed
Why does the Tibetan Plateau, shown in this figure, have a high elevation?
A) Transform faulting
B) Seafloor spreading
C) Continental rifting
D) Continental collision
E) Hot-spot activity
Hurricanes develop from areas of low atmospheric pressure called tropical ________
Fill in the blank(s) with correct word
A block of ice sliding down an incline has its maximum potential energy at
A. half-way down. B. the top. C. a quarter of the way down. D. the bottom.