El Niño
A) is caused by global warming.
B) results in cooler waters in the western equatorial Pacific.
C) helps the fishing industry in Ecuador and Peru.
D) does not impact North America.
E) none of the above
B
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The goal of Green Revolution scientists was to develop improved and better
A. irrigation systems. B. non-toxic pesticides. C. high-yield seeds. D. fertilizers.
During which era of the Historical Evolution of the U.S. City were cities compact, usually about 3-4 miles in diameter?
A) Internet era B) Electric Streetcar era C) Pedestrian/Horse car era D) Automobile era E) Freeway era
What are some of the reasons major recent earthquakes have had large death tolls?
A. location near high population densities B. generation of damaging tsunami C. structural collapse of poorly built structures D. All of these choices are correct.
An example of point source pollution is
A. runoff from cropland. B. fertilizer runoff from lawns. C. litter from fishing boats. D. runoff from cropland. E. a drainpipe from a factory.