People who are pessimistic about future world food production offer several arguments about constraints on the future. What is NOT one of their arguments?
A) There are biological limits to the productivity of fisheries.
B) There are biological limits to the productivity of rangelands.
C) Technology will fail to increase productivity.
D) Tropical environments are fragile.
E) Fresh water is increasingly scarce.
C
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"Depleting the Common" is a process where
A) overfishing by several countries creates a rapid depletion of the fisheries. B) international funding for fishing operations declines. C) local fisherman are pushed out of their fishing grounds by commercial fishermen. D) the most desired fish are overharvested, requiring fishermen to gather less desirable fish, which are worth less money.
________ would be associated with Benioff zones.
A. Edges of continents B. Oceanic trenches C. Island arcs D. Andesite volcanoes E. All the answers are correct.
A conductor and an insulator are actually
A. one and the same. B. opposites. C. similar in some substances. D. none of the above
In the past two decades, China's economic reforms have allowed _________________.
Fill in the blank(s) with the appropriate word(s).