A major factor in the population explosion of the zebra mussel in the Great Lakes region is
a. the zebra mussel's specialist ecological niche
b. its rapid reproductive rate
c. its lack of natural enemies that might control its population
d. that it is a prey species of the sea lamprey
e. its rapid reproductive rate and its lack of natural enemies that might control its population
E
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A coulomb of charge that passes through a 6-V battery is given
A) 6 joules. B) 6 amperes. C) 6 ohms. D) 6 watts. E) 6 newtons.
In July, the thermal equator
A) trends equatorward over continents and poleward over the oceans. B) assumes an orientation that closely parallels that of the equator. C) trends poleward over continents and equatorward over the oceans. D) is apparently random and has yet to be adequately explained.
Transform faults along plate boundaries are typically found
A. sea-floor spreading centers. B. collision zones between plates. C. lateral motions of plates. D. both A and C
The longest records of Quaternary climate change come from studies of glacial ice in:
A) Greenland and Antarctica. B) Northern Canada. C) Siberia. D) Alaska.