Before the time of initial settlement by Polynesians, Easter Island had all but which of the following?
A. no permanent streams
B. several species of native terrestrial mammals
C. about 30 native plant species
D. high temperatures and humidity
E. poorly drained and marginal soils
Answer: B
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Which of these countries has the largest known supply of tungsten?
A. China B. United States C. Canada D. Monaco
The population distribution pattern of South America is distinguished by
A. the growth of large cities where rainforests have been deforested. B. a preference for urban locations in the tierra templada elevations. C. concentration along the coastal margins. D. the absence of capital cities inland from the coasts.
What type of igneous pluton is rock unit F?
a. sill b. volcanic neck c. lava flow d. batholith e. dike
Oxygen-isotope analysis is used on all of the following sources of proxy data EXCEPT:
A) sea floor sediments. B) glacial ice. C) coral reefs. D) tree rings.