The most advanced cultures in North and South America prior to European discovery were concentrated in which region?
a. The current United States
b. The area that is currently central Mexico south to northern South America
c. The southernmost portion of South America
d. The area that is now the U.S. west coast
Question 2
Family life cycle research has found that:
a. during the eighties, age at first marriage differed substantially from the pattern at the turn of the century
b. all families go through similar stages of development
c. few families experience substantive changes in the internal system of role relations during their passage through the family life cycle
d. the idea of a family life cycle is a useful measure of change in families
The salt marsh grass Spartina anglica originated on the coast of England as a hybrid of European and
European Rabbit in Shropshire, England, infected with myxomatosis, a disease caused by the Myxoma vi
Mars sketched as observed by Lowell sometime before 1914. (South top)
Chinese workers on a railway in the far West. “Without them,” Leland Stanford, president of the Cent
How Oxygen-16 Becomes More Concentrated in Glacial Ice
Ice cores: Periods of rapid climate change especially in North Atlantic