Which of the following features is formed by the collapse of caves?
A. travertine
B. stalactite
C. sinkhole
D. flowstone
E. stalagmite
Answer: C
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Militant environmental groups that use violence to achieve their ends
a. are considered valid by most environmentalists b. are applauded by most NGOs c. have never been active in the United States d. are opposed by most environmentalists e. all of these answers
If To equals the net flow rate of mixed surface water out of an estuary, the estuary volume divided by To yields the ________.
A. salt flow B. freshwater flow C. salt residence time D. water flow E. flushing time
What can not initiate a seiche?
A) Tides B) Storm surge C) Seabed displacement D) Internal waves
The Industrial Revolution has greatly impacted global agriculture such that
A) the need for fertilizers and herbicides has nearly been eliminated. B) agricultural productivity has more than doubled. C) soil degradation has been nearly eliminated. D) the cost of world agriculture has dropped significantly.