What allowed human and animal migration to occur from Asia to North America?
a. a warm spell called the Bölling-Alleröd period
b. the Eemian interglacial period
c. retreat of continental glaciers
d. the Bering land bridge
e. melting of the polar ice caps
ANSWER: d
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The French-speaking Canadians are concentrated in which of the following locations?
A. the Maritime Provinces B. Quebec C. Saskatchewan D. Vancouver, B.C.
Sachiko and Fred are having a discussion about the scientific method. Sachiko makes the comment that every time she sees people carrying open umbrellas, she also sees car accidents. This is a(n) ________
A) theory about umbrellas B) observation C) hypothesis D) theory about car accidents E) scientific study
The very common mineral shown in this photograph is commonly a pink- to cream-colored mineral with wavy, light-colored lines. What mineral is it?
A. quartz B. muscovite C. garnet D. biotite E. feldspar
Absolute instability results when the environmental lapse rate is ____ the ____ adiabatic rate
a. greater than; moist b. less than; moist c. the same as; dry d. greater than; dry e. less than; dry