Which of the following is not a form of artificial flood control?
A) levee construction
B) channel cutoff to form oxbow lakes during a flood
C) forced levee breaks to deflect flood waters
D) dam construction
B
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A positive effect of water seeping through a landfill is that it
A) stops the production of biogas. B) promotes the decomposition of paper and other biodegradable organics. C) helps petroleum-based plastics decompose. D) reduces the amount of groundwater contamination.
________ glaciers form when one or more ________ glaciers merge and are no longer confined
A) Ice cap; piedmont B) Alpine; valley C) Valley; piedmont D) Piedmont; valley
In order for a hurricane to form, how deep must the surface layer of warm ocean water extend to?
A. 40 metres B. 200 metres C. 20 metres D. 400 metres
What is a disadvantage of using tidal power?
A) It has high operating costs. B) It requires a large amount of man power. C) It cannot sustain the world's needs. D) It adds pollutants to the air.